ASTROSAT CZTI

Data Quality Report

Orbit 37266

Creation date: 2024-06-27T21:37:37.781439
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/AS1T04_087T01_9000005292_37266cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37266cztM0_level2_quad_clean.evt
Size (bytes)389,243,52069,822,720
Size371.2 MB 66.6 MB
Events in quadrant A2,843,964443,712
Events in quadrant B2,794,320446,511
Events in quadrant C2,820,404433,088
Events in quadrant D2,970,169420,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118682
B0118351
C0116251
D0125521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5282551.041272%
B5282480.908747%
C5282641.211662%
D5282300.567967%

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 6594 5283 31 31 0.47% 0.59%
B 6594 5283 24 24 0.36% 0.45%
C 6594 5283 47 47 0.71% 0.89%
D 6594 5283 32 32 0.49% 0.61%

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 15 237 209344 1703.99 600 588 122.5
A 10 83 204989 1668.44 600 588 122.5
A 15 223 46232 372.57 600 588 122.5
B 0 190 147534 1277.37 593 578 115.0
B 0 213 83373 719.67 593 578 115.0
B 5 172 80655 696.04 593 578 115.0
C 14 254 245724 1813.91 576 579 135.1
C 15 214 218436 1611.99 576 579 135.1
C 0 10 77027 565.66 576 579 135.1
D 12 17 396992 2771.75 582 566 143.0
D 12 218 94327 655.56 582 566 143.0
D 2 153 55584 384.68 582 566 143.0

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