ASTROSAT CZTI

Data Quality Report

Orbit 05179

Creation date: 2024-06-27T14:52:20.474022
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/AS1G05_214T01_9000000652_05179cztM0_level2.evt modeM0/AS1G05_214T01_9000000652_05179cztM0_level2_quad_clean.evt
Size (bytes)451,730,88074,125,440
Size430.8 MB 70.7 MB
Events in quadrant A3,343,568449,425
Events in quadrant B3,299,327456,613
Events in quadrant C3,087,806454,235
Events in quadrant D3,502,359424,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143353
B0141202
C0136952
D0150072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584520.789793%
B6584620.941677%
C6584250.379708%
D65841161.761847%

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 8789 6586 9 9 0.10% 0.14%
B 8789 6586 6 6 0.07% 0.09%
C 8789 6586 1 1 0.01% 0.02%
D 8789 6586 53 53 0.60% 0.80%

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 0 247 244045 1507.75 784 767 161.4
A 0 50 54990 336.06 784 767 161.4
A 0 226 29504 178.1 784 767 161.4
B 15 204 71327 463.28 798 783 152.3
B 3 220 57647 373.44 798 783 152.3
B 4 80 33444 214.49 798 783 152.3
C 1 16 87413 484.3 767 770 178.9
C 12 4 7852 39.59 767 770 178.9
C 13 61 6153 30.09 767 770 178.9
D 2 33 177048 944.07 754 731 186.8
D 12 233 176721 942.32 754 731 186.8
D 7 237 99822 530.57 754 731 186.8

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