ASTROSAT CZTI

Data Quality Report

Orbit 58769

Creation date: 2026-08-09T11:50:34.439619
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_106T01_9000006596_58769cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58769cztM0_level2_quad_clean.evt
Size (bytes)2,907,270,720449,017,920
Size2.7 GB 428.2 MB
Events in quadrant A16,131,1823,232,075
Events in quadrant B18,703,5193,412,521
Events in quadrant C17,842,1653,071,598
Events in quadrant D52,338,2411,564,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0775095102
B0846925632
C0833625738
D019615617895

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074260
B074153
C074048
D074256

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337984181.236760%
B337727972.359943%
C337676681.978263%
D332431501145.155371%

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 50738 34195 170 170 0.34% 0.50%
B 50739 34186 259 259 0.51% 0.76%
C 50738 34185 427 427 0.84% 1.25%
D 50738 33696 12501 12501 24.64% 37.10%

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 15 233 790699 856.02 3746 3648 919.4
A 3 14 429035 462.66 3746 3648 919.4
A 3 254 82311 85.56 3746 3648 919.4
B 8 234 1381004 1759.82 3696 3562 782.7
B 0 171 793376 1009.07 3696 3562 782.7
B 4 201 315563 398.61 3696 3562 782.7
C 15 147 933431 926.77 3637 3604 1003.3
C 6 13 399276 394.37 3637 3604 1003.3
C 6 223 390153 385.28 3637 3604 1003.3
D 12 110 24376909 29847.2 2821 2684 816.6
D 11 129 13555908 16596.46 2821 2684 816.6
D 2 120 1057418 1291.56 2821 2684 816.6

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