ASTROSAT CZTI

Data Quality Report

Orbit 59151

Creation date: 2026-09-03T03:29:45.029556
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/AS1T05_264T01_9000006602_59151cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59151cztM0_level2_quad_clean.evt
Size (bytes)669,326,40086,541,120
Size638.3 MB 82.5 MB
Events in quadrant A3,124,169651,476
Events in quadrant B3,235,040719,827
Events in quadrant C3,640,826642,414
Events in quadrant D14,279,398160,959

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382918
B0138987
C01510717
D04686088

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0191
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63851021.597494%
B63911141.783758%
C63881412.207264%
D6381488976.618085%

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 7612 6394 36 36 0.47% 0.56%
B 7612 6393 31 31 0.41% 0.48%
C 7612 6394 94 94 1.23% 1.47%
D 7610 6381 4596 4596 60.39% 72.03%

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 10 251 182908 1007.15 729 712 180.9
A 3 254 23929 128.34 729 712 180.9
A 15 233 22057 117.99 729 712 180.9
B 4 236 166174 1059.48 731 705 156.2
B 10 128 66064 418.49 731 705 156.2
B 5 236 32412 203.02 731 705 156.2
C 5 250 366007 1835.93 716 710 199.0
C 14 254 325364 1631.66 716 710 199.0
C 12 252 36863 181.7 716 710 199.0
D 12 1 10772006 121650.0 308 293 88.5
D 12 110 1565390 17675.37 308 293 88.5
D 5 38 258862 2920.14 308 293 88.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct