ASTROSAT CZTI

Data Quality Report

Orbit 20212

Creation date: 2024-06-27T18:12:30.629125
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_117T01_9000002998_20212cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20212cztM0_level2_quad_clean.evt
Size (bytes)590,624,64086,120,640
Size563.3 MB 82.1 MB
Events in quadrant A3,640,866540,120
Events in quadrant B4,243,249535,588
Events in quadrant C3,666,527516,634
Events in quadrant D5,826,854492,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155742
B0174722
C0155182
D0223712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75111151.531088%
B75112283.035548%
C75111441.917188%
D751182410.970576%

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 7896 7512 1 1 0.01% 0.01%
B 7896 7512 22 22 0.28% 0.29%
C 7896 7512 0 0 0.00% 0.00%
D 7896 7512 549 549 6.95% 7.31%

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 24336 124.06 934 912 188.8
A 4 2 14583 72.41 934 912 188.8
A 13 254 8122 38.19 934 912 188.8
B 0 197 288416 1646.84 919 897 174.6
B 7 220 112118 637.05 919 897 174.6
B 15 222 87231 494.5 919 897 174.6
C 14 238 136399 650.78 888 892 208.2
C 3 233 46951 221.2 888 892 208.2
C 3 9 13969 62.8 888 892 208.2
D 7 38 1067183 4974.5 882 856 214.4
D 1 52 946490 4411.46 882 856 214.4
D 5 222 164002 761.09 882 856 214.4

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