ASTROSAT CZTI

Data Quality Report

Orbit 57944

Creation date: 2026-06-13T22:28:23.933750
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/AS1A14_031T01_9000006584_57944cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57944cztM0_level2_quad_clean.evt
Size (bytes)411,039,36092,036,160
Size392.0 MB 87.8 MB
Events in quadrant A2,805,388628,957
Events in quadrant B3,123,913667,823
Events in quadrant C5,640,833493,840
Events in quadrant D3,155,939558,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128721
B0136872
C0211191
D0138651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282530.843680%
B62821131.798790%
C6282116418.529131%
D6282951.512257%

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 7377 6283 1 1 0.01% 0.02%
B 7377 6283 26 26 0.35% 0.41%
C 7377 6282 691 691 9.37% 11.00%
D 7377 6283 56 56 0.76% 0.89%

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 7 64 25551 142.33 706 688 174.7
A 3 14 24162 134.37 706 688 174.7
A 13 254 11879 64.06 706 688 174.7
B 10 247 79801 527.9 692 666 149.9
B 5 185 53471 352.26 692 666 149.9
B 3 238 44850 294.75 692 666 149.9
C 1 12 1691791 10381.68 594 588 162.9
C 15 224 1239419 7604.73 594 588 162.9
C 14 254 173108 1059.04 594 588 162.9
D 5 32 108328 563.34 676 647 191.1
D 2 31 100945 524.71 676 647 191.1
D 8 240 58197 301.08 676 647 191.1

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