ASTROSAT CZTI

Data Quality Report

Orbit 57543

Creation date: 2026-05-17T23:44:35.601213
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_113T09_9000006574_57543cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57543cztM0_level2_quad_clean.evt
Size (bytes)514,909,440100,172,160
Size491.1 MB 95.5 MB
Events in quadrant A3,408,411671,179
Events in quadrant B3,690,784712,068
Events in quadrant C5,661,335586,935
Events in quadrant D5,748,412568,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154110
B0159350
C0219212
D0220420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7097300.422714%
B7098771.084813%
C709774410.483303%
D70975407.608849%

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 7097 7097 12 12 0.17% 0.17%
B 7098 7098 25 25 0.35% 0.35%
C 7097 7097 675 675 9.51% 9.51%
D 7097 7097 566 566 7.98% 7.98%

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 3 14 311293 1673.53 762 742 185.6
A 3 245 48583 257.81 762 742 185.6
A 4 249 28577 150.0 762 742 185.6
B 4 206 355286 2200.25 749 719 161.1
B 5 185 82379 506.74 749 719 161.1
B 1 159 58337 357.54 749 719 161.1
C 15 224 1487466 7775.26 706 699 191.2
C 6 223 1185515 6196.16 706 699 191.2
C 12 254 70269 363.83 706 699 191.2
D 15 142 2127431 10428.72 719 684 203.9
D 3 12 189027 923.56 719 684 203.9
D 15 94 162973 795.8 719 684 203.9

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