ASTROSAT CZTI

Data Quality Report

Orbit 37057

Creation date: 2024-06-27T21:34:42.503762
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_046T02_9000005274_37057cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37057cztM0_level2_quad_clean.evt
Size (bytes)576,449,28059,106,240
Size549.7 MB 56.4 MB
Events in quadrant A2,986,608377,436
Events in quadrant B3,625,263376,480
Events in quadrant C3,469,173364,134
Events in quadrant D7,031,457313,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122113
B0140712
C0135042
D0244682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5107210.411200%
B51072705.286861%
C51071893.700803%
D5107132926.023106%

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 7200 5108 9 9 0.12% 0.18%
B 7200 5108 186 186 2.58% 3.64%
C 7200 5108 167 167 2.32% 3.27%
D 7200 5108 1176 1176 16.33% 23.02%

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 258298 1888.12 686 676 136.4
A 11 254 53491 387.08 686 676 136.4
A 7 3 10003 68.36 686 676 136.4
B 5 172 697813 5641.75 666 651 123.6
B 5 184 158696 1278.97 666 651 123.6
B 15 85 72732 583.31 666 651 123.6
C 0 10 587993 3888.63 657 663 151.0
C 15 214 214263 1414.22 657 663 151.0
C 0 207 64305 421.36 657 663 151.0
D 12 17 2201161 14909.1 612 596 147.6
D 6 112 1347703 9126.81 612 596 147.6
D 1 52 529082 3580.56 612 596 147.6

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