ASTROSAT CZTI

Data Quality Report

Orbit 30280

Creation date: 2024-06-27T20:13:02.887730
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_007T01_9000004350_30280cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30280cztM0_level2_quad_clean.evt
Size (bytes)664,813,440112,282,560
Size634.0 MB 107.1 MB
Events in quadrant A3,600,311738,709
Events in quadrant B5,634,962763,227
Events in quadrant C4,494,507731,614
Events in quadrant D5,942,317690,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148842
B0212592
C0182592
D0222482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6839701.023541%
B68401291.885965%
C68402523.684211%
D68396489.475069%

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 9309 6841 3 3 0.03% 0.04%
B 9310 6842 4 4 0.04% 0.06%
C 9310 6842 19 19 0.20% 0.28%
D 9309 6841 558 558 5.99% 8.16%

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 13 170 44989 244.46 913 898 180.4
A 8 192 27132 145.46 913 898 180.4
A 13 254 13486 69.79 913 898 180.4
B 6 159 1991422 11543.91 917 895 172.4
B 12 111 20723 114.99 917 895 172.4
B 11 111 18817 103.94 917 895 172.4
C 3 233 735077 3549.92 889 897 206.8
C 14 238 168520 810.49 889 897 206.8
C 0 10 74995 358.28 889 897 206.8
D 12 227 1220849 5553.71 867 849 219.7
D 1 52 794667 3613.63 867 849 219.7
D 13 104 275750 1251.41 867 849 219.7

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