ASTROSAT CZTI

Data Quality Report

Orbit 11072

Creation date: 2024-06-27T16:07:53.806299
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/AS1G08_075T01_9000001616_11072cztM0_level2.evt modeM0/AS1G08_075T01_9000001616_11072cztM0_level2_quad_clean.evt
Size (bytes)513,452,16063,800,640
Size489.7 MB 60.8 MB
Events in quadrant A3,365,601381,463
Events in quadrant B4,179,074379,095
Events in quadrant C3,073,887379,105
Events in quadrant D4,505,976354,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137173
B0163292
C0130672
D0174992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6270751.196172%
B62703185.071770%
C6270420.669856%
D62702814.481659%

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 7580 6271 1 1 0.01% 0.02%
B 7580 6271 161 161 2.12% 2.57%
C 7580 6271 0 0 0.00% 0.00%
D 7580 6271 237 237 3.13% 3.78%

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 8 15 148856 899.27 819 803 164.6
A 15 174 57234 342.76 819 803 164.6
A 0 226 7397 40.05 819 803 164.6
B 4 239 942960 6202.86 811 793 151.9
B 15 204 24508 156.13 811 793 151.9
B 0 214 23680 150.68 811 793 151.9
C 13 61 5751 27.58 787 795 179.7
C 14 234 2575 9.9 787 795 179.7
C 5 207 2043 6.94 787 795 179.7
D 10 253 609239 3344.25 770 751 182.0
D 11 129 458910 2518.04 770 751 182.0
D 2 136 220260 1206.42 770 751 182.0

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