ASTROSAT CZTI

Data Quality Report

Orbit 31916

Creation date: 2024-06-27T20:34:09.335373
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/AS1A10_123T09_9000004654_31916cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31916cztM0_level2_quad_clean.evt
Size (bytes)772,176,960111,983,040
Size736.4 MB 106.8 MB
Events in quadrant A3,421,961797,617
Events in quadrant B6,149,097769,134
Events in quadrant C4,591,789727,459
Events in quadrant D8,796,189654,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141552
B0227032
C0183072
D0306872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6332721.137081%
B63323235.101074%
C63312814.438477%
D6331152624.103617%

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 7567 6333 0 0 0.00% 0.00%
B 7567 6333 100 100 1.32% 1.58%
C 7566 6332 29 29 0.38% 0.46%
D 7566 6332 1571 1571 20.76% 24.81%

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 12247 65.01 884 868 175.0
A 3 137 7950 40.46 884 868 175.0
A 0 226 7803 39.62 884 868 175.0
B 6 159 1678252 10689.47 849 831 156.9
B 4 80 690206 4393.08 849 831 156.9
B 5 172 148048 938.15 849 831 156.9
C 3 233 1006318 5455.02 803 807 184.3
C 0 10 274434 1484.46 803 807 184.3
C 14 238 139741 753.73 803 807 184.3
D 12 33 4569457 24758.69 789 772 184.5
D 8 195 1024328 5546.87 789 772 184.5
D 13 249 149772 807.46 789 772 184.5

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