ASTROSAT CZTI

Data Quality Report

Orbit 28998

Creation date: 2024-06-27T19:58:59.628569
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_073T06_9000004156_28998cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28998cztM0_level2_quad_clean.evt
Size (bytes)616,190,40084,741,120
Size587.6 MB 80.8 MB
Events in quadrant A3,684,190528,536
Events in quadrant B3,769,665538,788
Events in quadrant C3,926,450510,613
Events in quadrant D6,755,377448,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160081
B0161481
C0162231
D0252951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77532192.824713%
B77532563.301948%
C77532583.327744%
D7753107713.891397%

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 7813 7750 0 0 0.00% 0.00%
B 7813 7750 0 0 0.00% 0.00%
C 7813 7750 0 0 0.00% 0.00%
D 7813 7750 735 735 9.41% 9.48%

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 15 192 20718 102.25 946 922 193.6
A 13 254 13715 66.08 946 922 193.6
A 3 137 9881 46.28 946 922 193.6
B 10 245 45588 243.63 942 915 183.4
B 12 111 23322 122.2 942 915 183.4
B 11 111 21257 110.94 942 915 183.4
C 3 233 213154 986.75 910 914 215.1
C 14 238 145199 670.81 910 914 215.1
C 2 114 18705 82.71 910 914 215.1
D 1 52 2085727 10107.78 856 832 206.3
D 13 104 600061 2905.12 856 832 206.3
D 8 195 555046 2686.88 856 832 206.3

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