ASTROSAT CZTI

Data Quality Report

Orbit 33160

Creation date: 2024-06-27T20:45:31.672232
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/AS1A11_096T01_9000004766_33160cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33160cztM0_level2_quad_clean.evt
Size (bytes)2,441,053,440317,171,520
Size2.3 GB 302.5 MB
Events in quadrant A13,085,6851,974,469
Events in quadrant B19,022,9181,965,944
Events in quadrant C13,787,9701,948,376
Events in quadrant D26,171,4681,816,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05640
B05640
C05640
D05640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564907
B0746166
C0584136
D0976436

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27645390.141074%
B2764516585.997468%
C276452150.777717%
D2764513925.035269%

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 38388 27651 1 1 0.00% 0.00%
B 38388 27651 851 851 2.22% 3.08%
C 38388 27651 164 164 0.43% 0.59%
D 38388 27651 1073 1073 2.80% 3.88%

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 14 254 126127 185.02 3335 3267 664.0
A 13 254 49984 70.35 3335 3267 664.0
A 13 6 41975 58.29 3335 3267 664.0
B 5 172 2292635 3761.97 3242 3161 608.6
B 0 219 1637097 2684.82 3242 3161 608.6
B 5 200 838354 1372.36 3242 3161 608.6
C 0 10 586616 787.13 3228 3257 741.1
C 1 241 288747 385.22 3228 3257 741.1
C 14 67 137112 180.61 3228 3257 741.1
D 8 195 6674005 8278.27 3186 3116 805.8
D 2 249 1631228 2020.41 3186 3116 805.8
D 2 250 1618476 2004.59 3186 3116 805.8

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