ASTROSAT CZTI

Data Quality Report

Orbit 20160828_G05_158T01_9000000630_level2

Creation date: 2025-11-05T01:15:41.201187
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/AS1G05_158T01_9000000630cztM0_level2.fits modeM0/AS1G05_158T01_9000000630cztM0_level2_quad_clean.evt
Size (bytes)728,533,440749,715,840
Size694.8 MB 715.0 MB
Events in quadrant A4,438,0484,545,812
Events in quadrant B4,268,2864,550,818
Events in quadrant C4,367,9484,442,353
Events in quadrant D3,618,6863,798,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660050
B01719150
C01613910
D02237960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015860
B015860
C015860
D015860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832310991.403164%
B7832310721.368691%
C783235040.643489%
D7832360297.697611%

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 90426 78300 0 0 0.00% 0.00%
B 90426 78308 0 0 0.00% 0.00%
C 90426 78311 0 0 0.00% 0.00%
D 90426 78182 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 4389 11.27 1151 1074 294.1
A 0 29 4249 10.79 1151 1074 294.1
A 14 204 3807 9.29 1151 1074 294.1
B 2 9 3726 11.51 1128 1074 230.4
B 12 226 3025 8.47 1128 1074 230.4
B 14 254 2831 7.62 1128 1074 230.4
C 1 80 3156 6.76 1153 1065 309.2
C 1 81 3069 6.48 1153 1065 309.2
C 9 188 3021 6.33 1153 1065 309.2
D 11 82 2926 7.18 1031 936 277.3
D 3 14 2747 6.53 1031 936 277.3
D 6 231 2717 6.42 1031 936 277.3

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