ASTROSAT CZTI

Data Quality Report

Orbit 27800

Creation date: 2024-06-27T19:44:31.528141
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/AS1A10_016T01_9000004016_27800cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27800cztM0_level2_quad_clean.evt
Size (bytes)1,950,137,280311,575,680
Size1.8 GB 297.1 MB
Events in quadrant A11,661,1121,976,595
Events in quadrant B13,662,5501,996,219
Events in quadrant C11,979,9871,923,395
Events in quadrant D20,091,4241,843,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508520
B0568580
C0513990
D0772010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246682260.916167%
B246696352.574081%
C246694291.739025%
D24668306612.429058%

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 27093 24671 0 0 0.00% 0.00%
B 27094 24669 204 204 0.75% 0.83%
C 27094 24670 1 1 0.00% 0.00%
D 27093 24668 2692 2692 9.94% 10.91%

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 13 254 42389 64.96 3017 2955 607.0
A 3 137 29468 43.68 3017 2955 607.0
A 0 226 25686 37.45 3017 2955 607.0
B 10 245 646076 1130.47 2983 2905 568.9
B 10 246 636517 1113.67 2983 2905 568.9
B 3 64 465996 813.95 2983 2905 568.9
C 14 238 461141 674.5 2889 2903 679.4
C 3 233 215568 313.03 2889 2903 679.4
C 4 175 33653 45.26 2889 2903 679.4
D 1 52 4830957 7277.47 2757 2683 663.5
D 11 248 3612675 5441.2 2757 2683 663.5
D 2 250 853274 1282.06 2757 2683 663.5

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