ASTROSAT CZTI

Data Quality Report

Orbit 21963

Creation date: 2024-06-27T18:34:36.534064
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/AS1A07_130T01_9000003246_21963cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21963cztM0_level2_quad_clean.evt
Size (bytes)571,619,520109,039,680
Size545.1 MB 104.0 MB
Events in quadrant A3,553,367706,596
Events in quadrant B3,735,433716,946
Events in quadrant C3,727,934699,373
Events in quadrant D5,776,145647,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157732
B0162022
C0160182
D0224622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7641180.235571%
B7641821.073158%
C76411001.308729%
D76417479.776207%

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 7876 7642 0 0 0.00% 0.00%
B 7876 7642 22 22 0.28% 0.29%
C 7876 7642 17 17 0.22% 0.22%
D 7876 7642 604 604 7.67% 7.90%

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 2 79 32087 169.67 913 895 183.8
A 13 254 12871 65.14 913 895 183.8
A 3 137 7919 38.21 913 895 183.8
B 3 64 96851 547.32 913 889 175.3
B 0 197 25407 139.84 913 889 175.3
B 0 230 22409 122.74 913 889 175.3
C 14 238 139172 661.24 889 896 209.1
C 9 54 89986 426.03 889 896 209.1
C 8 128 14294 64.07 889 896 209.1
D 13 174 2154846 10310.23 865 840 208.9
D 11 176 132607 630.71 865 840 208.9
D 13 172 118871 564.96 865 840 208.9

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