ASTROSAT CZTI

Data Quality Report

Orbit 50125

Creation date: 2025-01-04T20:52:13.982418
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/AS1C09_003T01_9000006442_50125cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50125cztM0_level2_quad_clean.evt
Size (bytes)1,171,215,36047,255,040
Size1.1 GB 45.1 MB
Events in quadrant A15,561,8216,664
Events in quadrant B3,261,284587,390
Events in quadrant C12,065,292158,357
Events in quadrant D12,002,181257,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502941
B0140061
C0399871
D0397881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6024597699.203187%
B60241352.241036%
C6024439772.991368%
D6023324353.843600%

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 6834 6025 5720 5720 83.70% 94.94%
B 6834 6025 62 62 0.91% 1.03%
C 6833 6023 3208 3208 46.95% 53.26%
D 6833 6023 3153 3153 46.14% 52.35%

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 6 250 12652021 163488.02 293 284 77.4
A 4 13 634431 8194.56 293 284 77.4
A 4 207 351178 4534.32 293 284 77.4
B 2 176 341856 2620.1 607 588 130.2
B 5 185 84284 642.58 607 588 130.2
B 0 229 80633 614.55 607 588 130.2
C 4 111 4341890 48620.39 301 297 89.3
C 15 214 2014415 22555.59 301 297 89.3
C 15 230 1245868 13948.83 301 297 89.3
D 15 168 2260089 16034.21 468 449 140.9
D 15 107 2131105 15118.95 468 449 140.9
D 7 61 1048196 7434.72 468 449 140.9

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