ASTROSAT CZTI

Data Quality Report

Orbit 58972

Creation date: 2026-08-22T04:34:18.238379
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_004T07_9000006598_58972cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58972cztM0_level2_quad_clean.evt
Size (bytes)2,468,401,920323,556,480
Size2.3 GB 308.6 MB
Events in quadrant A32,829,0211,730,496
Events in quadrant B22,546,0882,146,745
Events in quadrant C13,239,9362,240,791
Events in quadrant D20,872,7431,994,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01145244
B0837537
C0566984
D0791364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24444642326.276387%
B24444433717.742595%
C244444902.004582%
D2444422169.065619%

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 26129 24448 5560 5560 21.28% 22.74%
B 26129 24448 2821 2821 10.80% 11.54%
C 26129 24448 372 372 1.42% 1.52%
D 26129 24448 2076 2076 7.95% 8.49%

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 14 238 13630569 22763.79 2452 2397 598.7
A 3 14 8346514 13937.58 2452 2397 598.7
A 3 254 335518 556.43 2452 2397 598.7
B 2 249 7015040 13435.46 2474 2380 522.0
B 4 236 2953868 5654.72 2474 2380 522.0
B 6 255 933107 1783.17 2474 2380 522.0
C 12 252 1732314 2412.72 2623 2596 716.9
C 12 249 303617 419.88 2623 2596 716.9
C 14 246 140255 192.01 2623 2596 716.9
D 12 110 7431847 10210.23 2558 2440 727.6
D 2 249 869734 1191.92 2558 2440 727.6
D 3 12 666765 912.98 2558 2440 727.6

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