ASTROSAT CZTI

Data Quality Report

Orbit 11617

Creation date: 2024-06-27T16:15:58.430132
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/AS1A04_198T01_9000001708_11617cztM0_level2.evt modeM0/AS1A04_198T01_9000001708_11617cztM0_level2_quad_clean.evt
Size (bytes)516,214,08094,386,240
Size492.3 MB 90.0 MB
Events in quadrant A4,851,834593,114
Events in quadrant B3,428,441613,644
Events in quadrant C3,095,370597,399
Events in quadrant D3,789,922573,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189843
B0146842
C0139722
D0160952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69023995.780933%
B6902690.999710%
C6902250.362214%
D6902851.231527%

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 8584 6905 180 180 2.10% 2.61%
B 8584 6905 14 14 0.16% 0.20%
C 8584 6905 0 0 0.00% 0.00%
D 8584 6905 38 38 0.44% 0.55%

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 5 1365225 8423.69 791 772 162.0
A 1 162 160215 984.35 791 772 162.0
A 1 178 90353 553.04 791 772 162.0
B 4 239 181839 1149.92 814 792 157.4
B 15 204 23113 141.77 814 792 157.4
B 0 214 20730 126.64 814 792 157.4
C 13 61 5738 26.75 793 796 184.7
C 14 67 1963 6.32 793 796 184.7
C 3 202 1927 6.12 793 796 184.7
D 1 52 367665 1962.17 779 758 187.0
D 13 104 291144 1552.94 779 758 187.0
D 2 136 48320 254.35 779 758 187.0

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