ASTROSAT CZTI

Data Quality Report

Orbit 04998

Creation date: 2024-06-27T14:49:55.135396
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/AS1G05_115T01_9000000634_04998cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04998cztM0_level2_quad_clean.evt
Size (bytes)553,927,68084,237,120
Size528.3 MB 80.3 MB
Events in quadrant A3,470,641510,272
Events in quadrant B3,937,007512,997
Events in quadrant C3,325,999513,880
Events in quadrant D5,526,130484,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157693
B0169952
C0155494
D0217196

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76031151.512561%
B76031972.591082%
C7602450.591949%
D76014255.591370%

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 7683 7605 1 1 0.01% 0.01%
B 7683 7605 2 2 0.03% 0.03%
C 7683 7605 0 0 0.00% 0.00%
D 7683 7605 316 316 4.11% 4.16%

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 13 251 68878 382.35 873 854 177.9
A 0 50 22482 121.57 873 854 177.9
A 12 194 8948 45.49 873 854 177.9
B 15 204 289713 1707.6 877 857 169.2
B 0 219 116445 683.31 877 857 169.2
B 4 80 49169 285.6 877 857 169.2
C 13 61 7010 31.39 849 852 196.2
C 1 16 5850 25.47 849 852 196.2
C 12 4 3802 15.04 849 852 196.2
D 13 235 1232201 5956.07 834 805 206.7
D 2 33 472849 2283.2 834 805 206.7
D 12 233 223140 1075.4 834 805 206.7

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