ASTROSAT CZTI

Data Quality Report

Orbit 57262

Creation date: 2026-04-29T01:48:58.979225
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_049T03_9000006570_57262cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57262cztM0_level2_quad_clean.evt
Size (bytes)448,404,48092,376,000
Size427.6 MB 88.1 MB
Events in quadrant A2,780,448636,582
Events in quadrant B2,909,881681,019
Events in quadrant C7,134,115487,516
Events in quadrant D3,288,346555,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01299149
B01314350
C025824219
D01435956

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247230.368177%
B6245570.912730%
C6224134521.609897%
D6251791.263798%

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 7483 6251 6 6 0.08% 0.10%
B 7483 6248 10 10 0.13% 0.16%
C 7483 6241 1283 1283 17.15% 20.56%
D 7483 6258 80 80 1.07% 1.28%

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 91652 538.05 686 670 169.1
A 4 249 17040 96.81 686 670 169.1
A 13 254 9224 50.59 686 670 169.1
B 7 252 63584 433.9 677 652 145.0
B 10 16 50208 341.67 677 652 145.0
B 8 234 43720 296.94 677 652 145.0
C 15 224 4559534 28502.24 585 579 160.0
C 14 254 106376 661.43 585 579 160.0
C 12 254 52439 324.22 585 579 160.0
D 2 120 184118 988.09 649 622 185.7
D 7 96 168762 905.4 649 622 185.7
D 2 249 118211 633.2 649 622 185.7

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