ASTROSAT CZTI

Data Quality Report

Orbit 22914

Creation date: 2024-06-27T18:47:24.964933
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_009T01_9000003382_22914cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22914cztM0_level2_quad_clean.evt
Size (bytes)493,004,160101,664,000
Size470.2 MB 97.0 MB
Events in quadrant A3,074,264680,423
Events in quadrant B3,532,064687,786
Events in quadrant C3,019,411648,382
Events in quadrant D4,877,177622,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129711
B0143671
C0129641
D0189573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301520.825266%
B63011302.063165%
C6301721.142676%
D63013916.205364%

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 7576 6303 0 0 0.00% 0.00%
B 7576 6303 49 49 0.65% 0.78%
C 7576 6303 0 0 0.00% 0.00%
D 7576 6303 318 318 4.20% 5.05%

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 0 23 19371 118.23 790 776 157.3
A 13 254 10389 61.12 790 776 157.3
A 13 252 10116 59.39 790 776 157.3
B 0 197 277918 1915.27 780 763 144.7
B 6 36 137506 944.96 780 763 144.7
B 0 230 24323 162.81 780 763 144.7
C 14 238 121448 716.51 741 744 168.5
C 7 247 6370 33.4 741 744 168.5
C 13 61 5142 26.11 741 744 168.5
D 1 52 1251296 7085.54 738 719 176.5
D 12 233 268948 1519.74 738 719 176.5
D 13 174 263883 1491.04 738 719 176.5

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