ASTROSAT CZTI

Data Quality Report

Orbit 20210602_A10_071T44_9000004434_level2

Creation date: 2025-12-26T06:51:58.136501
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_071T44_9000004434cztM0_level2.fits modeM0/AS1A10_071T44_9000004434cztM0_level2_quad_clean.evt
Size (bytes)655,358,400466,067,520
Size625.0 MB 444.5 MB
Events in quadrant A4,216,2522,634,474
Events in quadrant B3,919,2122,573,247
Events in quadrant C3,938,5682,418,793
Events in quadrant D3,445,1122,159,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012820
B012820
C012820
D012820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01481670
B02002480
C01584840
D02295140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6306917602.790594%
B6306726174.149555%
C6306830724.870933%
D6306943136.838542%

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 73244 63053 0 0 0.00% 0.00%
B 73244 63050 0 0 0.00% 0.00%
C 73244 63049 0 0 0.00% 0.00%
D 73244 63031 0 0 0.00% 0.00%

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 0 29 3446 9.08 1099 1036 265.4
A 7 110 3255 8.36 1099 1036 265.4
A 9 19 3108 7.81 1099 1036 265.4
B 2 9 3164 10.63 1037 992 204.3
B 5 225 2584 7.79 1037 992 204.3
B 2 8 2558 7.66 1037 992 204.3
C 9 209 2687 6.49 1043 978 263.1
C 12 241 2657 6.38 1043 978 263.1
C 3 126 2644 6.33 1043 978 263.1
D 15 46 2557 6.41 984 900 258.4
D 7 3 2399 5.8 984 900 258.4
D 10 189 2386 5.75 984 900 258.4

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