ASTROSAT CZTI

Data Quality Report

Orbit 09976

Creation date: 2024-06-27T15:53:14.186195
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_074T01_9000001426_09976cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09976cztM0_level2_quad_clean.evt
Size (bytes)567,921,60088,318,080
Size541.6 MB 84.2 MB
Events in quadrant A4,474,850535,441
Events in quadrant B4,189,122535,534
Events in quadrant C3,399,529550,115
Events in quadrant D4,618,242522,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186214
B0177543
C0157553
D0190073

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76352753.601834%
B76353194.178127%
C7635700.916830%
D76351652.161100%

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 9010 7636 157 157 1.74% 2.06%
B 9010 7636 152 152 1.69% 1.99%
C 9010 7637 1 1 0.01% 0.01%
D 9010 7637 78 78 0.87% 1.02%

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 925432 5124.92 879 860 180.4
A 15 174 108941 599.1 879 860 180.4
A 8 15 35873 194.08 879 860 180.4
B 4 239 593765 3468.23 880 856 171.0
B 11 51 50455 290.13 880 856 171.0
B 0 214 41354 236.89 880 856 171.0
C 14 67 8354 37.08 864 865 202.0
C 9 221 6609 28.44 864 865 202.0
C 13 61 6506 27.93 864 865 202.0
D 1 52 411870 1873.1 850 828 219.4
D 2 16 236688 1074.8 850 828 219.4
D 8 195 226863 1030.03 850 828 219.4

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