ASTROSAT CZTI

Data Quality Report

Orbit 20191228_A07_091T04_9000003394_level2

Creation date: 2025-12-07T22:48:00.737756
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/AS1A07_091T04_9000003394cztM0_level2.fits modeM0/AS1A07_091T04_9000003394cztM0_level2_quad_clean.evt
Size (bytes)279,766,080257,679,360
Size266.8 MB 245.7 MB
Events in quadrant A1,723,9121,547,383
Events in quadrant B1,560,1201,353,071
Events in quadrant C1,676,6361,488,241
Events in quadrant D1,452,1221,356,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0614510
B0824480
C0620790
D0754240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A299413241.082128%
B29941320510.704385%
C299414991.666611%
D2994111123.713971%

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 33881 29942 0 0 0.00% 0.00%
B 33881 29930 0 0 0.00% 0.00%
C 33881 29943 0 0 0.00% 0.00%
D 33881 29923 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 1630 10.55 448 417 115.0
A 7 110 1344 8.06 448 417 115.0
A 9 19 1308 7.75 448 417 115.0
B 2 9 1249 10.4 412 392 82.4
B 2 8 1069 8.21 412 392 82.4
B 5 128 1040 7.86 412 392 82.4
C 2 191 1140 6.41 443 413 113.4
C 3 158 1132 6.34 443 413 113.4
C 9 209 1126 6.29 443 413 113.4
D 3 14 1077 6.22 415 377 112.5
D 13 238 1070 6.16 415 377 112.5
D 7 3 1020 5.72 415 377 112.5

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