ASTROSAT CZTI

Data Quality Report

Orbit 57469

Creation date: 2026-05-13T12:52:43.567212
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_113T09_9000006574_57469cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57469cztM0_level2_quad_clean.evt
Size (bytes)611,625,60087,552,000
Size583.3 MB 83.5 MB
Events in quadrant A2,799,668633,810
Events in quadrant B7,697,932491,136
Events in quadrant C6,897,498516,681
Events in quadrant D4,731,432548,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133871
B0275241
C0251861
D0185561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615150.226757%
B6616199830.199516%
C6616113817.200726%
D66163555.365780%

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 7250 6616 0 0 0.00% 0.00%
B 7251 6617 1449 1449 19.98% 21.90%
C 7251 6617 834 834 11.50% 12.60%
D 7251 6617 320 320 4.41% 4.84%

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 4 3 18172 99.45 709 691 175.8
A 3 14 15137 82.19 709 691 175.8
A 0 12 11326 60.51 709 691 175.8
B 4 206 5015083 39555.19 586 562 126.8
B 10 247 96736 758.63 586 562 126.8
B 0 245 52711 411.36 586 562 126.8
C 12 254 2403464 13903.09 629 622 172.8
C 15 224 1608051 9300.75 629 622 172.8
C 14 254 290538 1677.48 629 622 172.8
D 7 96 687611 3672.43 664 634 187.1
D 2 249 386785 2064.28 664 634 187.1
D 15 142 346452 1848.67 664 634 187.1

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