ASTROSAT CZTI

Data Quality Report

Orbit 23207

Creation date: 2024-06-27T18:51:17.947876
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/AS1A08_008T02_9000003430_23207cztM0_level2.evt modeM0/AS1A08_008T02_9000003430_23207cztM0_level2_quad_clean.evt
Size (bytes)543,136,320140,356,800
Size518.0 MB 133.9 MB
Events in quadrant A3,640,141947,761
Events in quadrant B3,958,803951,758
Events in quadrant C3,899,861910,922
Events in quadrant D4,411,580889,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162362
B0170912
C0167052
D0185662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7925851.072555%
B79262182.750442%
C79262212.788292%
D79262252.838759%

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 8890 7927 0 0 0.00% 0.00%
B 8891 7928 42 42 0.47% 0.53%
C 8891 7928 14 14 0.16% 0.18%
D 8891 7928 131 131 1.47% 1.65%

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 13 254 11376 54.97 942 920 190.2
A 3 137 8454 39.61 942 920 190.2
A 0 226 8001 37.23 942 920 190.2
B 12 17 161917 897.98 940 911 179.3
B 0 190 55340 303.57 940 911 179.3
B 15 32 55128 302.38 940 911 179.3
C 14 238 144084 686.67 903 906 208.5
C 0 10 136496 650.27 903 906 208.5
C 2 16 34541 161.31 903 906 208.5
D 13 153 390981 1766.44 910 882 220.8
D 1 52 342405 1546.48 910 882 220.8
D 13 172 119842 538.67 910 882 220.8

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