ASTROSAT CZTI

Data Quality Report

Orbit 35382

Creation date: 2022-04-21T11:23:20.745097
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/AS1A11_099T01_9000005068_35382cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35382cztM0_level2_quad_clean.evt
Size (bytes)997,378,56074,761,920
Size951.2 MB 71.3 MB
Events in quadrant A3,054,995580,922
Events in quadrant B9,298,194398,370
Events in quadrant C3,416,110569,050
Events in quadrant D14,037,027297,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127663
B0317242
C0136062
D0456712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932631.062036%
B5932268245.212407%
C59321222.056642%
D5932473379.787593%

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 7365 5933 39 39 0.53% 0.66%
B 7365 5933 2131 2131 28.93% 35.92%
C 7365 5933 90 90 1.22% 1.52%
D 7365 5933 4605 4605 62.53% 77.62%

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 9 143 143124 1005.77 696 683 141.6
A 10 83 129249 907.8 696 683 141.6
A 14 254 65573 458.19 696 683 141.6
B 4 251 6471472 63649.02 521 508 101.7
B 5 172 316681 3109.91 521 508 101.7
B 5 200 207168 2032.73 521 508 101.7
C 0 10 494835 3127.53 671 675 158.0
C 15 214 244560 1543.54 671 675 158.0
C 3 233 24994 153.91 671 675 158.0
D 7 80 10996764 109995.4 403 391 100.0
D 1 52 436688 4364.23 403 391 100.0
D 12 235 385289 3850.09 403 391 100.0

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