ASTROSAT CZTI

Data Quality Report

Orbit 46802

Creation date: 2024-06-27T23:27:49.463354
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/AS1A13_068T13_9000006268_46802cztM0_level2.fits modeM0/AS1A13_068T13_9000006268_46802cztM0_level2_quad_clean.evt
Size (bytes)1,366,246,080296,334,720
Size1.3 GB 282.6 MB
Events in quadrant A18,733,3651,912,856
Events in quadrant B9,231,9751,986,407
Events in quadrant C9,065,1391,968,664
Events in quadrant D12,050,6101,772,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677343
B0405102
C0414102
D0493662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1931410025.187947%
B193145943.075489%
C193144162.153878%
D193147433.846950%

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 20359 19316 212 212 1.04% 1.10%
B 20359 19316 33 33 0.16% 0.17%
C 20359 19316 120 120 0.59% 0.62%
D 20359 19316 404 404 1.98% 2.09%

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 10 83 9240292 21146.43 2108 2059 436.9
A 3 7 979492 2237.36 2108 2059 436.9
A 13 248 111111 249.62 2108 2059 436.9
B 0 198 245303 584.53 2119 2047 416.2
B 3 112 161274 382.61 2119 2047 416.2
B 5 172 116081 274.02 2119 2047 416.2
C 0 207 397971 808.29 2093 2098 489.8
C 14 254 324607 658.5 2093 2098 489.8
C 12 249 79245 157.52 2093 2098 489.8
D 1 52 2065671 3942.34 2077 2009 523.5
D 13 249 964253 1838.23 2077 2009 523.5
D 13 138 364656 692.79 2077 2009 523.5

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