ASTROSAT CZTI

Data Quality Report

Orbit 07875

Creation date: 2024-06-27T15:25:08.158588
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/AS1A02_071T01_9000001078_07875cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07875cztM0_level2_quad_clean.evt
Size (bytes)417,977,28073,739,520
Size398.6 MB 70.3 MB
Events in quadrant A3,010,342455,153
Events in quadrant B2,717,790474,999
Events in quadrant C3,900,897461,394
Events in quadrant D2,642,369443,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127832
B0118811
C0157231
D0118511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5689571.001934%
B5689420.738267%
C5689611.072245%
D5689220.386711%

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 6849 5690 14 14 0.20% 0.25%
B 6849 5690 4 4 0.06% 0.07%
C 6849 5690 2 2 0.03% 0.04%
D 6849 5690 4 4 0.06% 0.07%

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 15 239 203307 1492.67 670 654 135.8
A 2 79 197464 1449.64 670 654 135.8
A 15 234 11439 79.44 670 654 135.8
B 4 239 40082 305.12 681 666 129.2
B 12 111 12720 93.31 681 666 129.2
B 11 111 10288 74.48 681 666 129.2
C 1 16 1251480 8103.44 667 673 154.4
C 12 4 19648 122.93 667 673 154.4
C 8 229 18275 114.04 667 673 154.4
D 2 152 30263 182.12 666 647 162.6
D 14 34 27107 162.71 666 647 162.6
D 13 104 19548 116.23 666 647 162.6

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