ASTROSAT CZTI

Data Quality Report

Orbit 10921

Creation date: 2024-06-27T16:05:40.976362
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/AS1A04_109T01_9000001578_10921cztM0_level2.evt modeM0/AS1A04_109T01_9000001578_10921cztM0_level2_quad_clean.evt
Size (bytes)762,932,160107,121,600
Size727.6 MB 102.2 MB
Events in quadrant A7,953,786599,017
Events in quadrant B5,628,703676,467
Events in quadrant C3,947,170686,372
Events in quadrant D4,954,859645,351

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02990310
B0229054
C0185284
D0211202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9168129714.147033%
B91703633.958561%
C9170280.305344%
D91711171.275761%

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 9762 9172 1068 1068 10.94% 11.64%
B 9762 9172 216 216 2.21% 2.35%
C 9762 9172 0 0 0.00% 0.00%
D 9762 9172 80 80 0.82% 0.87%

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 13 251 2036047 10651.35 951 930 191.1
A 8 5 1723642 9016.29 951 930 191.1
A 13 210 216124 1126.28 951 930 191.1
B 4 239 1494848 7551.12 1033 1006 197.8
B 0 214 30474 148.96 1033 1006 197.8
B 12 111 21259 102.38 1033 1006 197.8
C 0 207 7843 29.09 1009 1014 234.8
C 13 61 7508 27.66 1009 1014 234.8
C 8 222 4824 16.23 1009 1014 234.8
D 1 52 560793 2333.59 996 969 239.9
D 5 222 168843 699.77 996 969 239.9
D 8 195 156727 649.27 996 969 239.9

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