ASTROSAT CZTI

Data Quality Report

Orbit 17909

Creation date: 2024-06-27T17:42:30.765349
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_096T06_9000002668_17909cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17909cztM0_level2_quad_clean.evt
Size (bytes)557,657,280134,259,840
Size531.8 MB 128.0 MB
Events in quadrant A3,357,109915,039
Events in quadrant B3,638,296938,536
Events in quadrant C3,411,474889,355
Events in quadrant D5,974,780803,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152432
B0158532
C0152432
D0231652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7464620.830654%
B74641041.393355%
C74641091.460343%
D7465101413.583389%

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 7759 7465 1 1 0.01% 0.01%
B 7759 7465 13 13 0.17% 0.17%
C 7759 7465 0 0 0.00% 0.00%
D 7760 7465 909 909 11.71% 12.18%

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 15 174 19422 106.21 861 839 175.0
A 15 31 9625 50.21 861 839 175.0
A 13 210 8533 43.97 861 839 175.0
B 15 222 76520 461.94 867 844 163.8
B 7 220 41497 248.15 867 844 163.8
B 4 48 30940 183.71 867 844 163.8
C 14 238 135196 695.32 831 832 193.2
C 3 233 34206 172.71 831 832 193.2
C 13 61 5848 25.95 831 832 193.2
D 7 238 2520154 13165.57 783 757 191.4
D 2 165 283326 1476.61 783 757 191.4
D 13 168 75472 390.43 783 757 191.4

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