ASTROSAT CZTI

Data Quality Report

Orbit 37840

Creation date: 2024-06-27T21:45:09.673344
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/AS1C07_001T12_9000005352_37840cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37840cztM0_level2_quad_clean.evt
Size (bytes)424,123,20085,242,240
Size404.5 MB 81.3 MB
Events in quadrant A2,764,554583,946
Events in quadrant B3,117,383575,811
Events in quadrant C2,670,384548,473
Events in quadrant D3,958,452528,322

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110993
B0123552
C0107142
D0151142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4917250.508440%
B4917971.972748%
C4917480.976205%
D49172104.270897%

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 7070 4918 11 11 0.16% 0.22%
B 7070 4918 76 76 1.07% 1.55%
C 7070 4918 47 47 0.66% 0.96%
D 7070 4918 184 184 2.60% 3.74%

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 345859 2940.27 590 580 117.4
A 9 143 59777 504.1 590 580 117.4
A 15 222 20918 173.19 590 580 117.4
B 5 172 375655 3531.8 574 562 106.2
B 0 229 196420 1844.16 574 562 106.2
B 10 246 119447 1119.39 574 562 106.2
C 15 214 220777 1725.59 560 564 127.6
C 0 10 153346 1197.2 560 564 127.6
C 1 23 40229 310.82 560 564 127.6
D 1 52 879994 6476.28 566 552 135.8
D 12 233 433093 3185.27 566 552 135.8
D 2 249 141876 1040.72 566 552 135.8

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