ASTROSAT CZTI

Data Quality Report

Orbit 07756

Creation date: 2024-06-27T15:23:35.154107
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/AS1G06_064T01_9000001066_07756cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07756cztM0_level2_quad_clean.evt
Size (bytes)440,910,720101,977,920
Size420.5 MB 97.3 MB
Events in quadrant A3,126,305656,232
Events in quadrant B3,310,772676,634
Events in quadrant C3,180,157662,918
Events in quadrant D3,279,380624,742

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137563
B0141742
C0138362
D0143602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713280.417101%
B6713390.580962%
C6713360.536273%
D6713660.983167%

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 7913 6714 0 0 0.00% 0.00%
B 7913 6713 1 1 0.01% 0.01%
C 7913 6713 1 1 0.01% 0.01%
D 7913 6713 31 31 0.39% 0.46%

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 4 208 11400 64.1 808 792 165.5
A 0 226 7510 40.6 808 792 165.5
A 12 194 7061 37.88 808 792 165.5
B 4 173 49256 312.13 823 805 155.2
B 0 214 15325 93.54 823 805 155.2
B 12 111 14772 89.98 823 805 155.2
C 12 4 19140 98.55 807 812 186.0
C 1 16 8981 43.92 807 812 186.0
C 13 61 6168 28.8 807 812 186.0
D 1 52 80988 413.85 794 771 193.8
D 12 221 80445 411.05 794 771 193.8
D 2 14 38332 193.78 794 771 193.8

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