ASTROSAT CZTI

Data Quality Report

Orbit 55035

Creation date: 2025-12-01T09:41:59.609760
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_025T01_9000006530_55035cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55035cztM0_level2_quad_clean.evt
Size (bytes)1,313,896,320149,647,680
Size1.2 GB 142.7 MB
Events in quadrant A10,519,9771,022,810
Events in quadrant B5,945,0171,235,506
Events in quadrant C5,507,7181,103,115
Events in quadrant D25,719,350326,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03997933
B0265589
C02548811
D08480370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12188149412.257959%
B121941661.361325%
C12193760.623308%
D12189878272.048568%

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 13997 12199 1197 1197 8.55% 9.81%
B 13997 12199 52 52 0.37% 0.43%
C 13997 12199 23 23 0.16% 0.19%
D 13998 12197 7237 7237 51.70% 59.33%

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 32 4530120 14890.23 1237 1209 304.2
A 0 8 906125 2975.2 1237 1209 304.2
A 3 45 98896 321.18 1237 1209 304.2
B 4 81 225862 816.44 1289 1241 275.1
B 5 236 191471 691.43 1289 1241 275.1
B 2 249 99458 356.99 1289 1241 275.1
C 1 16 149931 421.71 1275 1264 352.5
C 12 252 142456 400.5 1275 1264 352.5
C 14 254 98436 275.64 1275 1264 352.5
D 11 129 9380143 46667.76 691 658 201.0
D 15 94 7700866 38312.5 691 658 201.0
D 15 93 2009810 9996.56 691 658 201.0

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