ASTROSAT CZTI

Data Quality Report

Orbit 22882

Creation date: 2024-06-27T18:47:01.121723
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/AS1A08_009T01_9000003382_22882cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22882cztM0_level2_quad_clean.evt
Size (bytes)302,529,60063,944,640
Size288.5 MB 61.0 MB
Events in quadrant A1,918,018422,733
Events in quadrant B2,259,515435,818
Events in quadrant C1,945,402410,221
Events in quadrant D2,773,106392,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080952
B092451
C082461
D0108991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3898200.513084%
B3898541.385326%
C3898491.257055%
D38981553.976398%

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 5083 3899 0 0 0.00% 0.00%
B 5083 3899 1 1 0.02% 0.03%
C 5083 3899 0 0 0.00% 0.00%
D 5083 3899 87 87 1.71% 2.23%

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 13 254 6408 59.82 496 487 99.0
A 0 226 4397 39.51 496 487 99.0
A 3 137 3920 34.69 496 487 99.0
B 0 190 179852 1917.63 494 481 93.5
B 3 209 77295 821.21 494 481 93.5
B 3 64 24215 253.74 494 481 93.5
C 14 238 76807 696.33 471 473 109.6
C 2 16 19120 170.1 471 473 109.6
C 7 247 9564 82.93 471 473 109.6
D 7 238 555076 4810.72 471 455 115.3
D 1 52 174998 1513.96 471 455 115.3
D 5 32 90544 781.42 471 455 115.3

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