ASTROSAT CZTI

Data Quality Report

Orbit 09527

Creation date: 2024-06-27T15:47:18.493413
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/AS1G07_049T01_9000001352_09527cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09527cztM0_level2_quad_clean.evt
Size (bytes)410,944,320115,784,640
Size391.9 MB 110.4 MB
Events in quadrant A2,899,130781,157
Events in quadrant B2,943,688781,181
Events in quadrant C2,890,798760,040
Events in quadrant D3,284,743746,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141321248
B0143101212
C0145341377
D0151851381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014012
B014012
C014014
D014010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6273250.398533%
B6290340.540541%
C6234520.834135%
D6248180.288092%

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 7419 6575 2 2 0.03% 0.03%
B 7419 6598 1 1 0.01% 0.02%
C 7419 6546 32 32 0.43% 0.49%
D 7419 6562 10 10 0.13% 0.15%

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 1 162 49803 333.94 724 709 147.0
A 1 178 17018 110.93 724 709 147.0
A 1 161 15611 101.36 724 709 147.0
B 0 219 70889 508.92 723 706 137.9
B 12 111 13891 95.61 723 706 137.9
B 11 111 11199 76.09 723 706 137.9
C 4 254 194872 1221.07 688 691 159.0
C 14 234 8916 51.72 688 691 159.0
C 13 61 5189 28.28 688 691 159.0
D 8 195 282791 1520.63 685 670 185.5
D 13 137 148470 796.64 685 670 185.5
D 1 52 73563 392.89 685 670 185.5

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