ASTROSAT CZTI

Data Quality Report

Orbit 35410

Creation date: 2022-09-12T19:04:48.425466
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/AS1T05_022T01_9000005070_35410cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35410cztM0_level2_quad_clean.evt
Size (bytes)683,233,92054,167,040
Size651.6 MB 51.7 MB
Events in quadrant A2,681,541337,382
Events in quadrant B10,250,502260,896
Events in quadrant C3,420,591333,664
Events in quadrant D3,960,606315,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113952
B0342871
C0135161
D0153481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5594120.214516%
B5594325958.258849%
C5594641.144083%
D55942915.202002%

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 7296 5595 3 3 0.04% 0.05%
B 7296 5595 2842 2842 38.95% 50.80%
C 7296 5595 52 52 0.71% 0.93%
D 7296 5595 211 211 2.89% 3.77%

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 110586 833.68 654 641 131.9
A 7 16 20044 147.13 654 641 131.9
A 13 6 17279 126.16 654 641 131.9
B 4 251 3598804 39591.77 474 462 90.9
B 5 14 1249891 13747.19 474 462 90.9
B 5 31 1216561 13380.47 474 462 90.9
C 0 10 410799 2748.17 637 640 149.2
C 0 207 253768 1696.02 637 640 149.2
C 15 214 231006 1543.51 637 640 149.2
D 13 249 511311 3336.53 627 609 153.1
D 2 152 190466 1240.37 627 609 153.1
D 2 31 177403 1155.03 627 609 153.1

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