ASTROSAT CZTI

Data Quality Report

Orbit 54326

Creation date: 2025-10-13T12:20:56.308256
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_126T15_9000006516_54326cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54326cztM0_level2_quad_clean.evt
Size (bytes)667,100,16074,283,840
Size636.2 MB 70.8 MB
Events in quadrant A2,601,622567,713
Events in quadrant B2,674,526605,627
Events in quadrant C8,200,526414,243
Events in quadrant D10,766,977256,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121051
B0122881
C0286251
D0360111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5805150.258398%
B5805320.551249%
C5805162227.941430%
D5806307252.910782%

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 6945 5806 1 1 0.01% 0.02%
B 6945 5806 3 3 0.04% 0.05%
C 6945 5805 1579 1579 22.74% 27.20%
D 6946 5807 2863 2863 41.22% 49.30%

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 15 174 84860 562.31 607 594 149.9
A 7 29 33661 220.66 607 594 149.9
A 4 3 28669 187.35 607 594 149.9
B 7 0 80391 614.09 602 579 130.0
B 10 247 69211 528.07 602 579 130.0
B 0 171 36213 274.17 602 579 130.0
C 1 16 3442483 24235.36 513 506 142.0
C 1 241 2272094 15994.51 513 506 142.0
C 13 3 219816 1544.19 513 506 142.0
D 8 176 7492587 61723.95 420 399 121.4
D 3 12 861636 7095.25 420 399 121.4
D 15 108 468840 3859.22 420 399 121.4

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