ASTROSAT CZTI

Data Quality Report

Orbit 30923

Creation date: 2024-06-27T20:21:14.170443
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/AS1C06_007T01_9000004470_30923cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30923cztM0_level2_quad_clean.evt
Size (bytes)714,119,04085,936,320
Size681.0 MB 82.0 MB
Events in quadrant A3,741,467540,891
Events in quadrant B6,195,994537,713
Events in quadrant C4,652,939498,670
Events in quadrant D6,509,185482,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161792
B0240532
C0187622
D0245532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113968478824324046
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77902943.774069%
B77904946.341463%
C7790124215.943517%
D77906648.523748%

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 7820 7791 0 0 0.00% 0.00%
B 7820 7790 24 24 0.31% 0.31%
C 7820 7791 18 18 0.23% 0.23%
D 7820 7791 398 398 5.09% 5.11%

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 13 254 14591 69.8 966 943 195.5
A 3 137 9635 44.45 966 943 195.5
A 0 226 8129 36.75 966 943 195.5
B 6 159 2194626 11937.84 951 926 183.8
B 0 190 90090 485.22 951 926 183.8
B 5 172 48055 256.47 951 926 183.8
C 14 238 398718 1959.22 870 873 203.1
C 14 254 369763 1816.63 870 873 203.1
C 3 233 353815 1738.09 870 873 203.1
D 12 218 932600 4246.69 915 887 219.4
D 13 174 481522 2190.7 915 887 219.4
D 1 52 467138 2125.14 915 887 219.4

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