ASTROSAT CZTI

Data Quality Report

Orbit 44715

Creation date: 2024-06-27T23:05:34.136215
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/AS1A13_077T01_9000006014_44715cztM0_level2.fits modeM0/AS1A13_077T01_9000006014_44715cztM0_level2_quad_clean.evt
Size (bytes)986,247,360168,508,800
Size940.6 MB 160.7 MB
Events in quadrant A14,973,782961,548
Events in quadrant B6,023,3901,202,710
Events in quadrant C4,889,7311,164,101
Events in quadrant D9,760,0801,003,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05270010
B0253472
C0226792
D0368752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11128268824.155284%
B111312141.922559%
C11130600.539084%
D1113110049.019854%

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 12639 11131 2215 2215 17.53% 19.90%
B 12641 11133 75 75 0.59% 0.67%
C 12641 11133 5 5 0.04% 0.04%
D 12641 11133 742 742 5.87% 6.66%

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 15 223 7411681 31100.93 1143 1117 238.3
A 10 83 3045305 12775.96 1143 1117 238.3
A 13 248 77356 319.96 1143 1117 238.3
B 5 255 260151 1062.89 1235 1197 243.6
B 0 189 145030 590.37 1235 1197 243.6
B 4 171 143041 582.2 1235 1197 243.6
C 3 233 49530 168.22 1220 1225 287.2
C 14 254 40129 135.48 1220 1225 287.2
C 0 207 15341 49.16 1220 1225 287.2
D 13 249 2210227 7429.53 1180 1145 297.3
D 11 241 843004 2831.32 1180 1145 297.3
D 1 52 695629 2335.67 1180 1145 297.3

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