ASTROSAT CZTI

Data Quality Report

Orbit 31431

Creation date: 2024-06-27T20:28:25.390446
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_094T34_9000004574_31431cztM0_level2.evt modeM0/AS1A10_094T34_9000004574_31431cztM0_level2_quad_clean.evt
Size (bytes)313,680,96063,123,840
Size299.1 MB 60.2 MB
Events in quadrant A1,621,636431,541
Events in quadrant B3,261,371417,414
Events in quadrant C1,806,123419,423
Events in quadrant D2,584,228407,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068621
B0119791
C073701
D098411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3315581.749623%
B33142798.418829%
C33142647.966204%
D33142096.306578%

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 3625 3316 0 0 0.00% 0.00%
B 3624 3314 47 47 1.30% 1.42%
C 3624 3316 0 0 0.00% 0.00%
D 3624 3316 118 118 3.26% 3.56%

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 13 254 6697 74.15 419 409 84.8
A 3 137 4353 46.51 419 409 84.8
A 0 226 3537 36.88 419 409 84.8
B 6 159 925564 11562.65 401 389 80.0
B 12 1 660060 8244.43 401 389 80.0
B 4 80 54091 671.16 401 389 80.0
C 14 238 112898 1189.48 397 397 94.6
C 14 254 70627 742.54 397 397 94.6
C 3 233 54609 573.18 397 397 94.6
D 12 218 416918 4318.68 403 392 96.4
D 8 195 377982 3914.98 403 392 96.4
D 13 249 109614 1132.45 403 392 96.4

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