ASTROSAT CZTI

Data Quality Report

Orbit 19978

Creation date: 2024-06-27T18:09:28.187858
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/AS1A05_082T09_9000002978_19978cztM0_level2.evt modeM0/AS1A05_082T09_9000002978_19978cztM0_level2_quad_clean.evt
Size (bytes)844,948,80089,533,440
Size805.8 MB 85.4 MB
Events in quadrant A14,045,126164,917
Events in quadrant B3,558,932710,592
Events in quadrant C3,785,651664,788
Events in quadrant D3,721,197677,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465712
B0152602
C0158382
D0160752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7055634489.922041%
B7055690.978030%
C70551041.474132%
D7055530.751240%

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 7609 7054 3950 3950 51.91% 56.00%
B 7610 7055 13 13 0.17% 0.18%
C 7610 7056 7 7 0.09% 0.10%
D 7610 7056 22 22 0.29% 0.31%

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 14 238 12609871 266968.55 226 222 47.2
A 14 254 516476 10930.01 226 222 47.2
A 14 237 35981 757.08 226 222 47.2
B 3 64 32837 188.96 884 863 169.2
B 7 220 30226 173.53 884 863 169.2
B 12 111 19953 112.82 884 863 169.2
C 3 233 222938 1105.27 845 850 200.9
C 14 238 132775 656.56 845 850 200.9
C 9 221 112386 555.08 845 850 200.9
D 1 52 340986 1583.78 874 852 214.8
D 12 218 40922 186.58 874 852 214.8
D 2 234 28310 127.85 874 852 214.8

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