ASTROSAT CZTI

Data Quality Report

Orbit 17505

Creation date: 2024-06-27T17:37:23.744310
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/AS1T03_068T01_9000002594_17505cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17505cztM0_level2_quad_clean.evt
Size (bytes)533,695,680118,235,520
Size509.0 MB 112.8 MB
Events in quadrant A3,692,487773,605
Events in quadrant B3,793,854778,345
Events in quadrant C3,862,823743,087
Events in quadrant D4,275,663734,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164892
B0165152
C0164862
D0183432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7921550.694357%
B7921720.908976%
C79201041.313131%
D79211411.780078%

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 8496 7923 11 11 0.13% 0.14%
B 8496 7923 4 4 0.05% 0.05%
C 8495 7922 1 1 0.01% 0.01%
D 8496 7923 81 81 0.95% 1.02%

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 13 210 35604 180.87 945 923 191.7
A 15 174 11910 57.3 945 923 191.7
A 4 2 10821 51.62 945 923 191.7
B 12 111 21027 111.45 942 915 180.5
B 7 220 21023 111.43 942 915 180.5
B 0 230 19277 101.75 942 915 180.5
C 14 238 138984 643.65 911 916 214.5
C 3 233 87708 404.61 911 916 214.5
C 5 218 63495 291.73 911 916 214.5
D 13 189 379627 1699.59 924 898 222.8
D 11 176 242274 1083.2 924 898 222.8
D 10 70 56569 249.83 924 898 222.8

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