ASTROSAT CZTI

Data Quality Report

Orbit 57105

Creation date: 2026-04-18T13:48:02.268167
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_083T10_9000006566_57105cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57105cztM0_level2_quad_clean.evt
Size (bytes)324,126,72056,085,120
Size309.1 MB 53.5 MB
Events in quadrant A2,020,313379,240
Events in quadrant B2,677,792374,347
Events in quadrant C2,002,568366,471
Events in quadrant D4,987,968297,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09173349
B011088343
C09133420
D0185591086

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0873
B0875
C0864
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39761413.546278%
B397546511.698113%
C39811082.712886%
D392861115.554990%

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 5702 4003 38 38 0.67% 0.95%
B 5703 4006 231 231 4.05% 5.77%
C 5708 4004 4 4 0.07% 0.10%
D 5686 3950 543 543 9.55% 13.75%

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 154731 1384.16 448 436 111.5
A 13 248 50381 448.05 448 436 111.5
A 8 9 26188 231.02 448 436 111.5
B 10 16 819484 9202.27 417 402 89.0
B 4 171 90664 1014.08 417 402 89.0
B 7 252 27035 299.22 417 402 89.0
C 12 252 131075 1106.9 437 433 118.0
C 12 254 43502 364.91 437 433 118.0
C 6 223 26123 217.67 437 433 118.0
D 15 142 2546267 22417.02 402 383 113.6
D 12 33 648312 5705.15 402 383 113.6
D 8 240 39149 341.34 402 383 113.6

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