ASTROSAT CZTI

Data Quality Report

Orbit 15519

Creation date: 2024-06-27T17:09:44.987773
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/AS1T02_085T01_9000002296_15519cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15519cztM0_level2_quad_clean.evt
Size (bytes)487,952,64078,615,360
Size465.3 MB 75.0 MB
Events in quadrant A3,889,116479,946
Events in quadrant B3,469,195486,165
Events in quadrant C3,489,182468,512
Events in quadrant D3,465,097468,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157982
B0145101
C0144511
D0147561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68492093.051540%
B68491061.547671%
C68491171.708279%
D6849691.007446%

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 7630 6850 60 60 0.79% 0.88%
B 7630 6850 4 4 0.05% 0.06%
C 7630 6851 0 0 0.00% 0.00%
D 7630 6850 11 11 0.14% 0.16%

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 14 238 290702 1731.72 836 819 167.4
A 0 253 250999 1494.54 836 819 167.4
A 14 237 129044 766.0 836 819 167.4
B 0 189 40417 252.3 837 817 157.0
B 15 201 25014 154.16 837 817 157.0
B 0 213 20633 126.25 837 817 157.0
C 3 233 208255 1114.73 804 808 186.1
C 14 238 125296 668.94 804 808 186.1
C 0 207 6255 29.27 804 808 186.1
D 5 222 199289 988.03 827 801 200.9
D 7 38 43342 211.76 827 801 200.9
D 1 52 34104 165.77 827 801 200.9

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