ASTROSAT CZTI

Data Quality Report

Orbit 36192

Creation date: 2022-06-08T16:09:04.322441
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_097T17_9000005170_36192cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36192cztM0_level2_quad_clean.evt
Size (bytes)462,280,32053,674,560
Size440.9 MB 51.2 MB
Events in quadrant A2,590,406326,038
Events in quadrant B2,625,254331,392
Events in quadrant C3,196,872323,519
Events in quadrant D5,223,559268,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110263
B0111882
C0127842
D0192242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535880.149309%
B5358140.261292%
C5358310.578574%
D535882415.378873%

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 7001 5359 3 3 0.04% 0.06%
B 7001 5359 5 5 0.07% 0.09%
C 7001 5359 20 20 0.29% 0.37%
D 7001 5359 694 694 9.91% 12.95%

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 172532 1382.26 612 597 124.4
A 8 144 22251 174.09 612 597 124.4
A 13 6 14499 111.76 612 597 124.4
B 5 172 126342 1064.02 610 593 118.2
B 0 246 33308 276.81 610 593 118.2
B 15 85 19380 158.96 610 593 118.2
C 4 254 332215 2378.69 599 602 139.4
C 15 214 247066 1767.91 599 602 139.4
C 0 10 127023 906.83 599 602 139.4
D 2 250 1654165 12122.38 554 540 136.4
D 12 6 804882 5896.46 554 540 136.4
D 13 249 422503 3093.32 554 540 136.4

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