ASTROSAT CZTI

Data Quality Report

Orbit 00150

Creation date: 2024-06-27T13:57:02.586735
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/AS1P01_140T01_9000000004_00150cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00150cztM0_level2_quad_clean.evt
Size (bytes)671,993,28043,130,880
Size640.9 MB 41.1 MB
Events in quadrant A4,904,628265,754
Events in quadrant B4,850,932271,913
Events in quadrant C4,260,155263,104
Events in quadrant D6,076,973230,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172940
B0171610
C0154400
D0208350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A388570.180180%
B3885230.592021%
C388550.128700%
D388543011.068211%

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 3886 3886 127 127 3.27% 3.27%
B 3886 3886 103 103 2.65% 2.65%
C 3886 3886 45 45 1.16% 1.16%
D 3886 3886 714 714 18.37% 18.37%

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 10 47143 226.55 1224 1192 202.8
A 13 146 43621 209.18 1224 1192 202.8
A 15 233 16957 77.72 1224 1192 202.8
B 0 255 79110 293.04 1176 1178 265.9
B 10 199 75958 281.19 1176 1178 265.9
B 8 236 40663 148.47 1176 1178 265.9
C 9 54 57528 188.11 1059 1095 300.0
C 10 17 11078 33.28 1059 1095 300.0
C 9 231 7434 21.13 1059 1095 300.0
D 0 243 290114 987.58 1127 1105 292.6
D 10 101 228173 775.92 1127 1105 292.6
D 2 70 122299 414.14 1127 1105 292.6

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