ASTROSAT CZTI

Data Quality Report

Orbit 19940

Creation date: 2024-06-27T18:09:01.496226
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/AS1A05_160T01_9000002970_19940cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19940cztM0_level2_quad_clean.evt
Size (bytes)456,995,52083,465,280
Size435.8 MB 79.6 MB
Events in quadrant A3,110,172531,829
Events in quadrant B3,269,773532,112
Events in quadrant C3,612,634506,747
Events in quadrant D3,400,074497,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133921
B0137362
C0146621
D0145031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6589801.214145%
B6589921.396267%
C6589881.335559%
D65891572.382759%

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 7429 6589 0 0 0.00% 0.00%
B 7429 6589 7 7 0.09% 0.11%
C 7429 6589 2 2 0.03% 0.03%
D 7429 6589 98 98 1.32% 1.49%

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 14 238 15500 91.2 804 788 161.3
A 0 226 6677 36.5 804 788 161.3
A 3 137 6501 35.41 804 788 161.3
B 7 220 55506 360.66 793 774 151.8
B 0 189 31774 204.28 793 774 151.8
B 10 247 24951 159.32 793 774 151.8
C 3 233 418538 2336.9 761 767 178.8
C 14 238 116475 647.24 761 767 178.8
C 9 221 101221 561.91 761 767 178.8
D 1 52 378766 1998.17 774 751 189.2
D 12 254 34848 180.24 774 751 189.2
D 7 238 32563 168.16 774 751 189.2

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