ASTROSAT CZTI

Data Quality Report

Orbit 24890

Creation date: 2024-06-27T19:11:05.293962
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/AS1A08_003T09_9000003644_24890cztM0_level2.evt modeM0/AS1A08_003T09_9000003644_24890cztM0_level2_quad_clean.evt
Size (bytes)869,541,120162,374,400
Size829.3 MB 154.9 MB
Events in quadrant A6,123,0001,033,188
Events in quadrant B5,981,1041,047,601
Events in quadrant C6,242,2781,000,305
Events in quadrant D7,146,350977,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263272
B0256872
C0263342
D0296062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124291491.198809%
B124301050.844730%
C124302552.051488%
D124302231.794047%

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 13779 12431 45 45 0.33% 0.36%
B 13780 12432 0 0 0.00% 0.00%
C 13780 12432 65 65 0.47% 0.52%
D 13780 12432 140 140 1.02% 1.13%

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 6 16 272603 894.14 1507 1475 303.2
A 4 2 40958 130.21 1507 1475 303.2
A 13 254 18926 57.55 1507 1475 303.2
B 0 190 36428 121.15 1496 1453 288.7
B 12 111 36379 120.98 1496 1453 288.7
B 11 111 32873 108.84 1496 1453 288.7
C 14 238 229233 669.75 1447 1457 340.1
C 2 16 193654 565.13 1447 1457 340.1
C 7 247 155983 454.37 1447 1457 340.1
D 7 238 599340 1675.5 1463 1420 356.9
D 8 195 528905 1478.13 1463 1420 356.9
D 1 52 450106 1257.31 1463 1420 356.9

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