ASTROSAT CZTI

Data Quality Report

Orbit 30623

Creation date: 2024-06-27T20:17:48.634078
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/AS1A10_071T05_9000004412_30623cztM0_level2.evt modeM0/AS1A10_071T05_9000004412_30623cztM0_level2_quad_clean.evt
Size (bytes)1,645,706,880236,338,560
Size1.5 GB 225.4 MB
Events in quadrant A9,250,1311,508,543
Events in quadrant B14,708,0391,499,001
Events in quadrant C10,026,6691,433,238
Events in quadrant D14,574,1261,405,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397535
B0579515
C0417515
D0565816

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190321480.777638%
B190332751.444859%
C190335542.910734%
D190323571.875788%

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 21137 19037 36 36 0.17% 0.19%
B 21138 19038 20 20 0.09% 0.11%
C 21138 19037 59 59 0.28% 0.31%
D 21137 19037 219 219 1.04% 1.15%

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 13 243816 520.64 2323 2276 463.9
A 13 254 35622 71.88 2323 2276 463.9
A 8 192 29914 59.57 2323 2276 463.9
B 6 159 5346805 12091.35 2295 2233 442.0
B 0 229 109795 243.34 2295 2233 442.0
B 5 255 78520 172.59 2295 2233 442.0
C 9 54 577670 1107.55 2205 2221 519.6
C 14 238 453278 868.13 2205 2221 519.6
C 14 254 140788 266.7 2205 2221 519.6
D 8 195 4574275 8628.43 2234 2177 529.9
D 1 52 1057588 1991.76 2234 2177 529.9
D 2 250 217983 407.27 2234 2177 529.9

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