ASTROSAT CZTI

Data Quality Report

Orbit 13903

Creation date: 2024-06-27T16:47:40.215525
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_010T02_9000002048_13903cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13903cztM0_level2_quad_clean.evt
Size (bytes)1,046,623,680156,729,600
Size998.1 MB 149.5 MB
Events in quadrant A7,182,380982,087
Events in quadrant B6,864,995983,509
Events in quadrant C6,236,103972,837
Events in quadrant D10,515,498890,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301814
B0288913
C0272273
D0397223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132705884.431047%
B132704383.300678%
C132702411.816127%
D13270173513.074604%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 14881 13271 247 247 1.66% 1.86%
B 14881 13272 98 98 0.66% 0.74%
C 14881 13273 0 0 0.00% 0.00%
D 14881 13272 1389 1389 9.33% 10.47%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 878875 2719.29 1583 1542 322.6
A 15 69 110814 338.69 1583 1542 322.6
A 14 111 38270 113.84 1583 1542 322.6
B 10 244 339639 1101.38 1583 1541 307.0
B 4 80 175659 567.2 1583 1541 307.0
B 15 201 45403 142.88 1583 1541 307.0
C 3 233 179241 491.28 1552 1557 361.7
C 13 61 10909 25.86 1552 1557 361.7
C 14 220 5859 11.89 1552 1557 361.7
D 13 122 3633888 10664.13 1436 1401 340.6
D 1 52 455543 1333.25 1436 1401 340.6
D 5 222 405982 1187.76 1436 1401 340.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter