ASTROSAT CZTI

Data Quality Report

Orbit 15907

Creation date: 2024-06-27T17:14:59.200003
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_143T01_9000002344_15907cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15907cztM0_level2_quad_clean.evt
Size (bytes)447,770,880100,474,560
Size427.0 MB 95.8 MB
Events in quadrant A3,409,443658,304
Events in quadrant B3,412,850685,782
Events in quadrant C3,236,702646,581
Events in quadrant D3,089,325628,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140603
B0139432
C0134002
D0131442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60751392.288066%
B60751031.695473%
C60751282.106996%
D6076681.119157%

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 7431 6077 20 20 0.27% 0.33%
B 7431 6077 3 3 0.04% 0.05%
C 7431 6077 0 0 0.00% 0.00%
D 7432 6078 9 9 0.12% 0.15%

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 15 239 283805 1743.91 809 793 162.3
A 9 143 10854 62.0 809 793 162.3
A 0 226 7133 39.07 809 793 162.3
B 10 245 52886 336.29 825 806 154.9
B 4 173 47859 303.83 825 806 154.9
B 0 189 19643 121.63 825 806 154.9
C 14 238 124465 675.06 788 797 183.2
C 3 233 29194 155.01 788 797 183.2
C 10 22 9305 46.44 788 797 183.2
D 2 234 27665 139.51 793 772 192.8
D 10 70 21438 107.21 793 772 192.8
D 1 52 17449 86.51 793 772 192.8

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