ASTROSAT CZTI

Data Quality Report

Orbit 35436

Creation date: 2022-04-20T22:29:18.164426
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/AS1A11_097T17_9000005074_35436cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35436cztM0_level2_quad_clean.evt
Size (bytes)442,074,24065,393,280
Size421.6 MB 62.4 MB
Events in quadrant A2,534,528414,829
Events in quadrant B3,825,171424,251
Events in quadrant C3,530,323400,605
Events in quadrant D3,161,505392,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103893
B0145452
C0134702
D0126612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4964100.201450%
B49642635.298147%
C49642845.721193%
D49641372.759871%

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 7087 4965 1 1 0.01% 0.02%
B 7087 4965 180 180 2.54% 3.63%
C 7087 4965 221 221 3.12% 4.45%
D 7087 4965 110 110 1.55% 2.22%

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 10 83 123997 1006.69 615 604 122.6
A 13 6 12176 94.41 615 604 122.6
A 9 143 8277 62.6 615 604 122.6
B 4 251 735325 6409.9 603 590 114.6
B 5 236 514151 4480.36 603 590 114.6
B 5 172 130418 1132.63 603 590 114.6
C 0 207 442121 3337.82 576 581 132.3
C 0 10 344060 2596.53 576 581 132.3
C 4 254 287266 2167.19 576 581 132.3
D 13 249 316376 2232.52 581 567 141.5
D 1 52 314759 2221.09 581 567 141.5
D 7 80 154011 1084.73 581 567 141.5

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