ASTROSAT CZTI

Data Quality Report

Orbit 57452

Creation date: 2026-05-11T20:39:01.558421
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_57452cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57452cztM0_level2_quad_clean.evt
Size (bytes)455,483,52085,688,640
Size434.4 MB 81.7 MB
Events in quadrant A4,166,550564,976
Events in quadrant B4,091,507586,882
Events in quadrant C4,774,097510,346
Events in quadrant D3,371,777522,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166131
B0162941
C0183111
D0140801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58703976.763203%
B58715228.891160%
C58715749.776869%
D58711182.009879%

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 7005 5872 410 410 5.85% 6.98%
B 7006 5873 247 247 3.53% 4.21%
C 7006 5872 378 378 5.40% 6.44%
D 7006 5873 64 64 0.91% 1.09%

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 0 12 1575400 9961.18 640 624 158.1
A 3 14 61907 387.64 640 624 158.1
A 13 153 35583 221.13 640 624 158.1
B 4 206 1194061 9035.37 616 594 132.1
B 5 185 174239 1314.61 616 594 132.1
B 10 247 85647 643.91 616 594 132.1
C 15 224 2225206 13707.97 591 584 162.3
C 1 16 54536 332.45 591 584 162.3
C 14 254 45648 277.68 591 584 162.3
D 15 142 204924 1162.99 621 593 175.7
D 2 249 203105 1152.64 621 593 175.7
D 8 240 175936 998.0 621 593 175.7

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