ASTROSAT CZTI

Data Quality Report

Orbit 00790

Creation date: 2024-06-27T14:02:57.920098
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/AS1P01_010T01_9000000112_00790cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00790cztM0_level2_quad_clean.evt
Size (bytes)1,911,781,440175,743,360
Size1.8 GB 167.6 MB
Events in quadrant A14,248,5691,135,659
Events in quadrant B14,901,2011,136,652
Events in quadrant C13,640,5541,128,859
Events in quadrant D14,323,4711,100,202

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508030
B0527280
C0490130
D0511270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118811231.035266%
B118811341.127851%
C11880870.732323%
D118803312.786195%

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 13346 11881 408 408 3.06% 3.43%
B 13346 11881 467 467 3.50% 3.93%
C 13345 11882 330 330 2.47% 2.78%
D 13345 11880 769 769 5.76% 6.47%

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 15 233 65761 70.04 3669 3698 886.1
A 15 17 32663 32.69 3669 3698 886.1
A 12 243 25713 24.85 3669 3698 886.1
B 0 23 154178 167.51 3808 3827 897.5
B 15 22 97162 103.99 3808 3827 897.5
B 5 191 85385 90.87 3808 3827 897.5
C 15 241 86825 87.03 3426 3537 957.0
C 3 111 60983 60.03 3426 3537 957.0
C 3 79 51346 49.96 3426 3537 957.0
D 13 25 1196923 1154.05 3349 3471 1034.1
D 1 4 392979 376.65 3349 3471 1034.1
D 10 85 67611 62.02 3349 3471 1034.1

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