ASTROSAT CZTI

Data Quality Report

Orbit 15008

Creation date: 2024-06-27T17:02:27.639431
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/AS1T02_056T01_9000002210_15008cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_15008cztM0_level2_quad_clean.evt
Size (bytes)480,654,72069,347,520
Size458.4 MB 66.1 MB
Events in quadrant A3,526,483417,336
Events in quadrant B3,924,124423,181
Events in quadrant C3,455,993408,505
Events in quadrant D3,207,242395,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144923
B0156792
C0141682
D0136792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525340.521073%
B65251952.988506%
C6525120.183908%
D6525210.321839%

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 7796 6527 2 2 0.03% 0.03%
B 7796 6527 133 133 1.71% 2.04%
C 7796 6527 0 0 0.00% 0.00%
D 7796 6527 11 11 0.14% 0.17%

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 1 162 97721 577.51 840 825 167.8
A 12 189 66224 389.78 840 825 167.8
A 1 178 44163 258.3 840 825 167.8
B 3 64 569599 3616.24 835 816 157.3
B 0 229 69340 435.67 835 816 157.3
B 12 111 17486 105.99 835 816 157.3
C 3 233 299840 1613.91 808 816 185.3
C 13 61 5939 27.65 808 816 185.3
C 3 232 3513 14.56 808 816 185.3
D 12 235 43387 203.79 800 782 209.1
D 2 120 40900 191.9 800 782 209.1
D 10 70 25874 120.02 800 782 209.1

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