ASTROSAT CZTI

Data Quality Report

Orbit 11331

Creation date: 2024-06-27T16:11:24.129251
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/AS1G08_062T01_9000001660_11331cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11331cztM0_level2_quad_clean.evt
Size (bytes)517,665,60090,498,240
Size493.7 MB 86.3 MB
Events in quadrant A3,181,880592,914
Events in quadrant B4,776,951565,846
Events in quadrant C2,959,665591,465
Events in quadrant D4,331,795550,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134292
B0183631
C0129511
D0172001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296600.952986%
B62965148.163914%
C6296200.317662%
D62963335.289072%

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 7541 6297 27 27 0.36% 0.43%
B 7541 6297 367 367 4.87% 5.83%
C 7541 6297 1 1 0.01% 0.02%
D 7541 6297 255 255 3.38% 4.05%

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 15 174 81049 514.35 772 756 156.1
A 8 15 71308 451.95 772 756 156.1
A 1 162 22741 140.83 772 756 156.1
B 4 239 1326048 9473.95 750 734 139.9
B 3 64 406587 2901.22 750 734 139.9
B 15 204 58553 413.32 750 734 139.9
C 9 54 17428 95.97 754 757 173.7
C 13 61 5551 27.6 754 757 173.7
C 0 207 2693 11.15 754 757 173.7
D 13 152 560019 3187.58 739 720 175.5
D 13 104 395650 2250.8 739 720 175.5
D 2 120 275226 1564.47 739 720 175.5

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