ASTROSAT CZTI

Data Quality Report

Orbit 20170717_A03_114T01_9000001390_level2

Creation date: 2025-11-15T12:15:40.142253
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/AS1A03_114T01_9000001390cztM0_level2.fits modeM0/AS1A03_114T01_9000001390cztM0_level2_quad_clean.evt
Size (bytes)48,052,80038,136,960
Size45.8 MB 36.4 MB
Events in quadrant A290,264209,469
Events in quadrant B284,182213,662
Events in quadrant C284,624200,504
Events in quadrant D245,202178,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102010
B0102580
C0101910
D0109620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5009170.339389%
B5009210.419245%
C5009150.299461%
D5009951.896586%

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 6104 5009 0 0 0.00% 0.00%
B 6104 5009 0 0 0.00% 0.00%
C 6104 5009 0 0 0.00% 0.00%
D 6104 5008 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 29 288 10.7 75 71 20.3
A 14 188 279 10.26 75 71 20.3
A 7 110 275 10.06 75 71 20.3
B 2 9 253 10.29 74 71 17.7
B 5 128 199 7.24 74 71 17.7
B 14 6 192 6.84 74 71 17.7
C 12 241 212 6.61 75 70 21.5
C 1 80 205 6.28 75 70 21.5
C 2 191 197 5.91 75 70 21.5
D 3 159 185 6.03 69 63 20.2
D 3 14 183 5.93 69 63 20.2
D 1 3 180 5.78 69 63 20.2

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