ASTROSAT CZTI

Data Quality Report

Orbit 52469

Creation date: 2025-06-26T12:34:09.196845
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/AS1A13_037T01_9000006476_52469cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52469cztM0_level2_quad_clean.evt
Size (bytes)537,474,24055,272,960
Size512.6 MB 52.7 MB
Events in quadrant A2,400,496445,938
Events in quadrant B2,816,242472,849
Events in quadrant C2,322,917423,490
Events in quadrant D11,989,6641,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011028486
B012511667
C010904442
D0410642286

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0962
B0964
C0962
D0984

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4713360.763845%
B46971493.172238%
C4721390.826096%
D4632461799.676166%

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 7486 4761 29 29 0.39% 0.61%
B 7487 4737 125 125 1.67% 2.64%
C 7487 4760 42 42 0.56% 0.88%
D 7487 4670 4256 4256 56.85% 91.13%

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 8 249 228864 1926.68 478 467 118.5
A 3 14 105572 886.63 478 467 118.5
A 13 248 67645 566.69 478 467 118.5
B 10 44 383800 3807.83 467 451 100.7
B 10 254 233971 2319.57 467 451 100.7
B 4 171 127599 1262.97 467 451 100.7
C 13 3 251323 1993.34 458 455 125.9
C 12 254 97510 771.18 458 455 125.9
C 15 224 82341 650.65 458 455 125.9
D 15 93 11042257 317617.27 115 110 34.8
D 6 42 136190 3914.22 115 110 34.8
D 15 24 79032 2270.12 115 110 34.8

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