ASTROSAT CZTI

Data Quality Report

Orbit 20240624_C09_008T04_9000006308_level2

Creation date: 2024-06-28T13:25:08.259232
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/AS1C09_008T04_9000006308cztM0_level2.fits modeM0/AS1C09_008T04_9000006308cztM0_level2_quad_clean.evt
Size (bytes)37,969,92031,008,960
Size36.2 MB 29.6 MB
Events in quadrant A190,966134,638
Events in quadrant B236,456183,240
Events in quadrant C243,532171,259
Events in quadrant D168,638140,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171950
B099560
C097380
D0131660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B01020
C01050
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396352213.171840%
B46981573.341848%
C47141162.460755%
D401059514.837905%

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 9806 4765 0 0 0.00% 0.00%
B 9813 5436 0 0 0.00% 0.00%
C 9817 5503 0 0 0.00% 0.00%
D 9817 4742 0 0 0.00% 0.00%

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 0 29 156 7.53 49 46 14.6
A 7 30 155 7.47 49 46 14.6
A 0 30 150 7.12 49 46 14.6
B 2 9 235 11.68 62 59 15.1
B 2 8 184 8.3 62 59 15.1
B 3 17 183 8.23 62 59 15.1
C 3 187 180 6.56 64 59 18.5
C 3 158 175 6.29 64 59 18.5
C 3 202 173 6.18 64 59 18.5
D 10 113 143 6.63 48 43 15.1
D 15 63 136 6.17 48 43 15.1
D 10 114 128 5.64 48 43 15.1

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