ASTROSAT CZTI

Data Quality Report

Orbit 39247

Creation date: 2024-06-27T22:02:17.176519
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/AS1A12_093T02_9000005452_39247cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39247cztM0_level2_quad_clean.evt
Size (bytes)118,785,60027,691,200
Size113.3 MB 26.4 MB
Events in quadrant A900,099189,508
Events in quadrant B881,076192,317
Events in quadrant C796,033180,185
Events in quadrant D1,689,739155,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036672
B036601
C033221
D061631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163750.305437%
B1637110.671961%
C163750.305437%
D163722513.744655%

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 3429 1638 2 2 0.06% 0.12%
B 3429 1638 3 3 0.09% 0.18%
C 3429 1638 1 1 0.03% 0.06%
D 3429 1638 193 193 5.63% 11.78%

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 163340 4103.62 188 185 39.8
A 13 248 7321 179.48 188 185 39.8
A 3 137 2006 45.8 188 185 39.8
B 5 172 84018 2176.26 186 181 38.5
B 0 190 24336 627.02 186 181 38.5
B 5 184 22228 572.3 186 181 38.5
C 15 214 76843 1728.03 182 182 44.4
C 0 10 9094 200.89 182 182 44.4
C 13 61 1241 23.87 182 182 44.4
D 12 235 821408 18494.79 174 169 44.4
D 5 222 68443 1537.57 174 169 44.4
D 12 233 41393 928.39 174 169 44.4

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