ASTROSAT CZTI

Data Quality Report

Orbit 53611

Creation date: 2025-08-26T10:31:09.693574
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_004T05_9000006502_53611cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53611cztM0_level2_quad_clean.evt
Size (bytes)888,102,72064,146,240
Size847.0 MB 61.2 MB
Events in quadrant A4,942,653535,206
Events in quadrant B3,497,032608,005
Events in quadrant C14,590,40334,763
Events in quadrant D9,371,351337,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188441
B0146473
C0474231
D0320571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61055889.631450%
B61051632.669943%
C6105580895.135135%
D6105240839.443079%

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 7018 6098 496 496 7.07% 8.13%
B 7018 6098 82 82 1.17% 1.34%
C 7017 6079 4961 4961 70.70% 81.61%
D 7018 6097 2313 2313 32.96% 37.94%

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 3 78 1345452 8556.42 637 621 157.2
A 15 174 308535 1959.09 637 621 157.2
A 8 249 247035 1567.8 637 621 157.2
B 5 172 190259 1354.17 647 622 140.0
B 0 171 182975 1302.16 647 622 140.0
B 2 249 154428 1098.31 647 622 140.0
C 1 241 7677891 125784.77 217 217 61.0
C 1 3 4220471 69141.21 217 217 61.0
C 15 224 1257217 20593.67 217 217 61.0
D 8 176 6302988 43206.46 503 479 145.9
D 13 153 503395 3447.71 503 479 145.9
D 3 12 147157 1005.54 503 479 145.9

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