ASTROSAT CZTI

Data Quality Report

Orbit 55996

Creation date: 2026-02-06T14:12:38.862644
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_066T02_9000006546_55996cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55996cztM0_level2_quad_clean.evt
Size (bytes)366,724,80077,581,440
Size349.7 MB 74.0 MB
Events in quadrant A3,402,199504,347
Events in quadrant B2,775,313545,148
Events in quadrant C3,341,697469,505
Events in quadrant D3,632,642449,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139942
B0121521
C0140751
D0146351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54322384.381443%
B5433971.785386%
C54332985.484999%
D54332574.730352%

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 6487 5432 235 235 3.62% 4.33%
B 6488 5433 41 41 0.63% 0.75%
C 6488 5434 291 291 4.49% 5.36%
D 6488 5433 244 244 3.76% 4.49%

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 7 64 778095 5545.91 566 552 140.2
A 15 32 158837 1128.99 566 552 140.2
A 4 249 93702 664.4 566 552 140.2
B 7 252 134395 1099.72 564 542 121.7
B 0 213 67721 551.93 564 542 121.7
B 0 199 67328 548.7 564 542 121.7
C 12 254 954804 6318.29 543 538 151.0
C 12 249 83337 548.22 543 538 151.0
C 13 3 57452 376.83 543 538 151.0
D 2 249 450051 2888.53 544 521 155.6
D 8 240 257393 1650.57 544 521 155.6
D 8 245 211866 1358.03 544 521 155.6

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