ASTROSAT CZTI

Data Quality Report

Orbit 00757

Creation date: 2024-06-27T14:02:32.761192
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/AS1P01_010T01_9000000108_00757cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00757cztM0_level2_quad_clean.evt
Size (bytes)1,206,976,32098,625,600
Size1.1 GB 94.1 MB
Events in quadrant A8,759,850630,459
Events in quadrant B9,463,248635,390
Events in quadrant C8,540,539623,612
Events in quadrant D9,318,249600,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310780
B0331480
C0303900
D0327610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7125150.210526%
B7125390.547368%
C7126180.252596%
D7126500.701656%

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 7125 7125 399 399 5.60% 5.60%
B 7125 7125 523 523 7.34% 7.34%
C 7126 7126 389 389 5.46% 5.46%
D 7126 7126 661 661 9.28% 9.28%

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 0 117 106594 190.88 2249 2267 546.6
A 15 17 15559 24.32 2249 2267 546.6
A 11 79 8990 12.3 2249 2267 546.6
B 8 4 240320 432.49 2336 2341 550.3
B 8 38 225343 405.27 2336 2341 550.3
B 7 221 106096 188.56 2336 2341 550.3
C 15 241 65185 103.63 2148 2224 607.5
C 3 111 42015 65.5 2148 2224 607.5
C 3 79 36017 55.62 2148 2224 607.5
D 13 25 1137602 1755.33 2077 2148 646.9
D 6 226 117700 178.63 2077 2148 646.9
D 1 4 103144 156.13 2077 2148 646.9

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