ASTROSAT CZTI

Data Quality Report

Orbit 05961

Creation date: 2024-06-27T15:01:13.811897
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_157T01_9000000772_05961cztM0_level2.evt modeM0/AS1G06_157T01_9000000772_05961cztM0_level2_quad_clean.evt
Size (bytes)3,965,460,480554,509,440
Size3.7 GB 528.8 MB
Events in quadrant A23,173,9573,571,415
Events in quadrant B20,696,5213,628,832
Events in quadrant C43,185,2203,166,015
Events in quadrant D30,021,7363,352,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01002227
B0928917
C01605207
D01215497

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09120
B09120
C09120
D09120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4474912512.795593%
B447498321.859259%
C44749947521.173658%
D4474930396.791213%

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 49959 44753 333 333 0.67% 0.74%
B 49959 44754 5 5 0.01% 0.01%
C 49959 44756 7335 7335 14.68% 16.39%
D 49959 44754 2552 2552 5.11% 5.70%

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 2 2748874 2675.91 5047 4924 1025.4
A 13 251 760039 736.39 5047 4924 1025.4
A 8 192 171727 162.67 5047 4924 1025.4
B 4 81 201095 201.3 5129 5005 974.1
B 15 204 187371 187.21 5129 5005 974.1
B 0 219 164778 164.02 5129 5005 974.1
C 9 247 25468025 24479.37 4500 4509 1040.2
C 9 54 74273 67.07 4500 4509 1040.2
C 14 206 37778 31.98 4500 4509 1040.2
D 1 20 9101177 7678.89 4869 4721 1184.6
D 10 172 1213002 1019.99 4869 4721 1184.6
D 2 63 621622 520.76 4869 4721 1184.6

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