ASTROSAT CZTI

Data Quality Report

Orbit 10926

Creation date: 2024-06-27T16:05:53.303143
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/AS1G08_068T01_9000001580_10926cztM0_level2.evt modeM0/AS1G08_068T01_9000001580_10926cztM0_level2_quad_clean.evt
Size (bytes)228,925,44036,374,400
Size218.3 MB 34.7 MB
Events in quadrant A2,004,267227,720
Events in quadrant B1,872,773234,151
Events in quadrant C1,365,254231,949
Events in quadrant D1,511,896220,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077332
B073281
C057141
D061211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26072499.551208%
B26071576.022248%
C2607361.380898%
D2607381.457614%

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 3842 2608 108 108 2.81% 4.14%
B 3842 2608 60 60 1.56% 2.30%
C 3842 2608 0 0 0.00% 0.00%
D 3842 2608 4 4 0.10% 0.15%

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 8 5 576293 8019.35 351 346 71.8
A 15 223 32695 450.42 351 346 71.8
A 15 239 13177 178.66 351 346 71.8
B 4 239 448316 6582.01 353 347 68.1
B 11 51 10480 148.88 353 347 68.1
B 0 219 8286 116.65 353 347 68.1
C 13 61 2603 27.66 349 351 81.4
C 12 4 2033 20.66 349 351 81.4
C 8 222 1705 16.63 349 351 81.4
D 8 195 107437 1284.87 347 338 83.4
D 13 249 22783 269.27 347 338 83.4
D 5 97 16078 188.83 347 338 83.4

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