ASTROSAT CZTI

Data Quality Report

Orbit 35813

Creation date: 2022-05-19T12:54:32.607256
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/AS1A09_146T01_9000005142_35813cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35813cztM0_level2_quad_clean.evt
Size (bytes)390,922,56090,469,440
Size372.8 MB 86.3 MB
Events in quadrant A2,693,915614,652
Events in quadrant B2,917,630607,445
Events in quadrant C2,753,532595,325
Events in quadrant D3,140,053577,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110722
B0116971
C0109151
D0125401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4915270.549339%
B49151012.054934%
C4915791.607325%
D4915561.139369%

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 7068 4916 21 21 0.30% 0.43%
B 7068 4916 81 81 1.15% 1.65%
C 7068 4916 58 58 0.82% 1.18%
D 7068 4916 66 66 0.93% 1.34%

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 15 169 170380 1396.46 611 601 121.6
A 10 83 139907 1145.82 611 601 121.6
A 13 6 13677 107.55 611 601 121.6
B 5 255 277890 2493.36 597 582 111.2
B 5 172 115410 1032.45 597 582 111.2
B 4 232 65100 580.1 597 582 111.2
C 0 10 232923 1700.45 591 598 136.6
C 15 214 205737 1501.47 591 598 136.6
C 13 61 3984 24.78 591 598 136.6
D 7 223 186512 1274.47 599 586 145.9
D 13 249 150931 1030.57 599 586 145.9
D 2 250 144971 989.72 599 586 145.9

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