ASTROSAT CZTI

Data Quality Report

Orbit 20210707_C06_002T02_9000004518_level2

Creation date: 2025-12-27T09:52:40.692401
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/AS1C06_002T02_9000004518cztM0_level2.fits modeM0/AS1C06_002T02_9000004518cztM0_level2_quad_clean.evt
Size (bytes)724,449,600713,678,400
Size690.9 MB 680.6 MB
Events in quadrant A4,610,2124,466,768
Events in quadrant B4,132,0104,166,871
Events in quadrant C4,351,2724,186,605
Events in quadrant D3,797,2203,747,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015060
B015060
C015060
D015080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01535880
B02502900
C01688380
D02591460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A736066970.946934%
B7349950846.917101%
C7357424773.366678%
D7356342235.740658%

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 82889 72194 0 0 0.00% 0.00%
B 82889 72179 0 0 0.00% 0.00%
C 82889 72192 0 0 0.00% 0.00%
D 82889 72172 0 0 0.00% 0.00%

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 0 29 4571 12.02 1202 1140 285.3
A 7 110 3709 9.0 1202 1140 285.3
A 0 30 3546 8.43 1202 1140 285.3
B 2 9 3335 10.58 1098 1054 215.5
B 2 8 2782 8.02 1098 1054 215.5
B 3 80 2781 8.01 1098 1054 215.5
C 12 241 3038 6.72 1154 1087 290.4
C 3 187 3020 6.66 1154 1087 290.4
C 9 209 2917 6.3 1154 1087 290.4
D 3 14 2708 6.0 1086 998 284.8
D 10 189 2704 5.99 1086 998 284.8
D 6 38 2668 5.86 1086 998 284.8

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