ASTROSAT CZTI

Data Quality Report

Orbit 04678

Creation date: 2024-06-27T14:45:32.796240
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/AS1G05_251T02_9000000588_04678cztM0_level2.evt modeM0/AS1G05_251T02_9000000588_04678cztM0_level2_quad_clean.evt
Size (bytes)1,245,539,520168,857,280
Size1.2 GB 161.0 MB
Events in quadrant A5,728,2741,161,760
Events in quadrant B5,489,9651,181,006
Events in quadrant C5,489,6061,186,495
Events in quadrant D20,236,189785,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255583
B0244122
C0246502
D0681182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115053102.694481%
B115051281.112560%
C115051711.486310%
D11505613353.307258%

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 13090 11507 181 181 1.38% 1.57%
B 13090 11507 11 11 0.08% 0.10%
C 13090 11507 50 50 0.38% 0.43%
D 13090 11506 5615 5615 42.90% 48.80%

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 14 111 754268 2949.62 1259 1231 255.3
A 0 50 59799 229.41 1259 1231 255.3
A 7 16 25629 95.57 1259 1231 255.3
B 15 204 267129 1088.53 1295 1262 244.2
B 7 252 62009 248.71 1295 1262 244.2
B 14 167 52424 209.47 1295 1262 244.2
C 14 48 503434 1724.43 1260 1263 291.2
C 8 128 19832 63.76 1260 1263 291.2
C 9 247 11986 36.82 1260 1263 291.2
D 8 112 14972111 67515.77 924 896 221.7
D 2 63 1021090 4600.77 924 896 221.7
D 2 234 197253 885.51 924 896 221.7

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