ASTROSAT CZTI

Data Quality Report

Orbit 20230619_A12_044T19_9000005698_level2

Creation date: 2023-06-21T10:49:13.775167
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/AS1A12_044T19_9000005698cztM0_level2.fits modeM0/AS1A12_044T19_9000005698cztM0_level2_quad_clean.evt
Size (bytes)643,049,280700,859,520
Size613.3 MB 668.4 MB
Events in quadrant A3,920,0344,340,481
Events in quadrant B3,696,4104,272,562
Events in quadrant C3,711,1084,068,528
Events in quadrant D3,243,3823,643,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014620
B014620
C014620
D014620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01569750
B01565340
C01615800
D01873860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A714772930.409922%
B714777671.073072%
C7147721082.949200%
D7147632804.588953%

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 97468 71467 0 0 0.00% 0.00%
B 97468 71441 0 0 0.00% 0.00%
C 97466 71140 0 0 0.00% 0.00%
D 97468 71275 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 3206 8.79 1022 956 256.0
A 9 19 3193 8.74 1022 956 256.0
A 7 110 3158 8.6 1022 956 256.0
B 2 9 3147 11.49 979 932 192.8
B 3 80 2818 9.78 979 932 192.8
B 3 17 2637 8.84 979 932 192.8
C 1 81 3010 8.33 980 914 251.5
C 3 202 2909 7.93 980 914 251.5
C 1 80 2906 7.92 980 914 251.5
D 7 3 2509 6.7 930 848 247.9
D 4 160 2367 6.13 930 848 247.9
D 10 189 2334 6.0 930 848 247.9

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