ASTROSAT CZTI

Data Quality Report

Orbit 12071

Creation date: 2024-06-27T16:22:00.064689
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/AS1A04_145T02_9000001790_12071cztM0_level2.evt modeM0/AS1A04_145T02_9000001790_12071cztM0_level2_quad_clean.evt
Size (bytes)122,400,00032,307,840
Size116.7 MB 30.8 MB
Events in quadrant A840,250220,226
Events in quadrant B900,064222,523
Events in quadrant C749,185220,666
Events in quadrant D1,117,237207,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034082
B036571
C030321
D043201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1431151.048218%
B1431221.537386%
C143130.209644%
D1431362.515723%

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 1432 1432 1 1 0.07% 0.07%
B 1432 1432 11 11 0.77% 0.77%
C 1432 1432 0 0 0.00% 0.00%
D 1432 1432 22 22 1.54% 1.54%

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 13 248 23669 573.19 196 193 41.0
A 1 162 18347 443.25 196 193 41.0
A 1 178 8355 199.28 196 193 41.0
B 4 239 84022 2225.06 193 189 37.7
B 15 204 48779 1289.65 193 189 37.7
B 0 219 11059 288.51 193 189 37.7
C 13 61 1379 26.12 191 193 45.4
C 0 207 1222 22.67 191 193 45.4
C 3 202 501 6.78 191 193 45.4
D 1 52 260963 5589.4 192 187 46.7
D 7 71 49355 1053.85 192 187 46.7
D 8 195 44137 942.01 192 187 46.7

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