ASTROSAT CZTI

Data Quality Report

Orbit 21637

Creation date: 2024-06-27T18:30:30.488441
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/AS1A06_002T02_9000003206_21637cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21637cztM0_level2_quad_clean.evt
Size (bytes)452,885,76094,608,000
Size431.9 MB 90.2 MB
Events in quadrant A2,989,877615,310
Events in quadrant B3,339,932635,236
Events in quadrant C3,079,963605,761
Events in quadrant D3,878,906570,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130152
B0139433
C0132012
D0158162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284230.366009%
B6283510.811714%
C6283631.002706%
D62831141.814420%

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 7489 6285 0 0 0.00% 0.00%
B 7488 6284 7 7 0.09% 0.11%
C 7488 6284 0 0 0.00% 0.00%
D 7488 6284 62 62 0.83% 0.99%

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 13 254 9684 57.63 774 758 154.9
A 0 226 6679 38.23 774 758 154.9
A 3 137 6369 36.23 774 758 154.9
B 0 229 107176 730.79 782 762 145.6
B 3 64 59357 402.4 782 762 145.6
B 0 230 41742 281.43 782 762 145.6
C 14 238 120229 676.67 756 761 176.6
C 10 22 9798 51.19 756 761 176.6
C 13 61 5193 25.1 756 761 176.6
D 7 238 382733 2107.02 747 726 181.3
D 1 52 267809 1473.14 747 726 181.3
D 7 223 126682 694.73 747 726 181.3

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