ASTROSAT CZTI

Data Quality Report

Orbit 20170817_G07_027T01_9000001470_level2

Creation date: 2025-11-16T18:55:16.656808
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/AS1G07_027T01_9000001470cztM0_level2.fits modeM0/AS1G07_027T01_9000001470cztM0_level2_quad_clean.evt
Size (bytes)198,878,400197,320,320
Size189.7 MB 188.2 MB
Events in quadrant A1,195,9001,180,114
Events in quadrant B1,157,1181,170,865
Events in quadrant C1,180,2101,124,222
Events in quadrant D1,015,4641,025,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467270
B0467440
C0443240
D0552920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214115222.437999%
B214114512.106394%
C214112371.106908%
D214113901.821494%

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 23371 21408 0 0 0.00% 0.00%
B 23371 21411 0 0 0.00% 0.00%
C 23371 21410 0 0 0.00% 0.00%
D 23371 21410 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 1185 11.24 310 290 79.6
A 14 188 1170 11.05 310 290 79.6
A 14 204 1038 9.39 310 290 79.6
B 2 9 1015 11.8 304 288 61.6
B 14 254 805 8.39 304 288 61.6
B 3 17 795 8.23 304 288 61.6
C 1 81 873 7.02 311 288 83.3
C 1 80 869 6.97 311 288 83.3
C 12 241 837 6.59 311 288 83.3
D 3 14 752 6.21 289 262 78.9
D 1 19 721 5.81 289 262 78.9
D 7 5 718 5.78 289 262 78.9

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