ASTROSAT CZTI

Data Quality Report

Orbit 20220818_A10_094T07_9000005290_level2

Creation date: 2022-08-22T14:46:57.609972
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/AS1A10_094T07_9000005290cztM0_level2_bc.evt modeM0/AS1A10_094T07_9000005290cztM0_level2_quad_clean.evt
Size (bytes)176,446,08059,227,200
Size168.3 MB 56.5 MB
Events in quadrant A1,192,549374,024
Events in quadrant B1,232,037389,412
Events in quadrant C1,227,804383,890
Events in quadrant D1,417,481370,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095770
B090410
C088390
D098930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39002175.564103%
B3900240.615385%
C3900641.641026%
D39001473.769231%

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 5543 3900 13 13 0.23% 0.33%
B 5543 3900 1 1 0.02% 0.03%
C 5543 3900 19 19 0.34% 0.49%
D 5543 3900 36 36 0.65% 0.92%

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 15 237 223367 5035.87 186 182 44.3
A 10 83 174198 3926.44 186 182 44.3
A 15 223 31926 716.26 186 182 44.3
B 4 80 181830 4416.65 191 187 41.1
B 0 230 75599 1833.64 191 187 41.1
B 5 200 59974 1453.72 191 187 41.1
C 15 214 156536 3350.96 187 185 46.7
C 14 254 120507 2578.77 187 185 46.7
C 12 247 108114 2313.16 187 185 46.7
D 10 253 159544 3338.54 188 182 47.7
D 13 249 82544 1725.43 188 182 47.7
D 1 52 78367 1637.93 188 182 47.7

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