ASTROSAT CZTI

Data Quality Report

Orbit 10727

Creation date: 2024-06-27T16:02:58.445401
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/AS1A03_078T01_9000001546_10727cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10727cztM0_level2_quad_clean.evt
Size (bytes)524,064,96098,064,000
Size499.8 MB 93.5 MB
Events in quadrant A3,357,648623,420
Events in quadrant B4,458,094634,299
Events in quadrant C3,299,749635,059
Events in quadrant D4,284,837593,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147013
B0179832
C0145572
D0174192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6942851.224431%
B69423284.724863%
C6942741.065975%
D69421622.333621%

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 9342 6945 5 5 0.05% 0.07%
B 9342 6944 115 115 1.23% 1.66%
C 9342 6945 1 1 0.01% 0.01%
D 9342 6945 89 89 0.95% 1.28%

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 15 174 26366 147.47 852 833 173.1
A 4 2 17319 95.22 852 833 173.1
A 1 162 10136 53.73 852 833 173.1
B 4 239 886963 5406.7 855 835 163.9
B 4 81 63350 381.43 855 835 163.9
B 0 219 57006 342.73 855 835 163.9
C 14 234 13029 62.36 841 844 195.4
C 13 61 6242 27.63 841 844 195.4
C 3 254 2881 10.43 841 844 195.4
D 13 249 323810 1615.47 826 803 199.9
D 14 34 323808 1615.46 826 803 199.9
D 8 195 198208 987.29 826 803 199.9

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