ASTROSAT CZTI

Data Quality Report

Orbit 20170331_G06_028T01_9000001122_level2

Creation date: 2025-11-10T09:50:28.090510
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/AS1G06_028T01_9000001122cztM0_level2.fits modeM0/AS1G06_028T01_9000001122cztM0_level2_quad_clean.evt
Size (bytes)235,739,520253,175,040
Size224.8 MB 241.4 MB
Events in quadrant A1,430,7321,551,995
Events in quadrant B1,367,4601,502,243
Events in quadrant C1,417,2441,526,199
Events in quadrant D1,231,4061,394,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511310
B0570610
C0524600
D0554230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246013301.341409%
B246019243.755945%
C246013121.268241%
D246013901.585301%

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 28716 24601 0 0 0.00% 0.00%
B 28716 24599 0 0 0.00% 0.00%
C 28716 24600 0 0 0.00% 0.00%
D 28716 24601 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 14 188 1452 11.67 370 347 94.7
A 0 29 1396 11.08 370 347 94.7
A 14 204 1207 9.08 370 347 94.7
B 2 9 1125 10.53 360 343 74.2
B 12 226 917 7.73 360 343 74.2
B 3 80 915 7.71 360 343 74.2
C 12 241 964 6.18 374 348 99.7
C 2 191 951 6.05 374 348 99.7
C 9 233 942 5.95 374 348 99.7
D 4 246 984 7.1 350 318 93.8
D 1 19 899 6.19 350 318 93.8
D 6 231 878 5.97 350 318 93.8

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