ASTROSAT CZTI

Data Quality Report

Orbit 08539

Creation date: 2024-06-27T15:34:01.803244
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/AS1G07_060T01_9000001200_08539cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08539cztM0_level2_quad_clean.evt
Size (bytes)397,134,72086,518,080
Size378.7 MB 82.5 MB
Events in quadrant A2,929,623552,137
Events in quadrant B3,124,434564,028
Events in quadrant C2,809,718546,882
Events in quadrant D2,744,523527,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127267
B0133155
C01255912
D0126286

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6161100.162311%
B6162600.973710%
C615840.064956%
D616140.064925%

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 7493 6164 0 0 0.00% 0.00%
B 7493 6164 25 25 0.33% 0.41%
C 7493 6164 0 0 0.00% 0.00%
D 7493 6164 1 1 0.01% 0.02%

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 85483 564.04 738 722 150.3
A 0 226 6916 41.22 738 722 150.3
A 12 194 6403 37.8 738 722 150.3
B 10 16 112919 788.66 745 728 142.3
B 0 214 65879 457.98 745 728 142.3
B 4 81 34798 239.5 745 728 142.3
C 13 61 5421 28.14 719 724 166.9
C 8 222 3353 15.75 719 724 166.9
C 3 202 1760 6.21 719 724 166.9
D 13 137 21669 122.0 706 688 172.0
D 2 234 20734 116.57 706 688 172.0
D 1 52 18652 104.46 706 688 172.0

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