ASTROSAT CZTI

Data Quality Report

Orbit 24466

Creation date: 2024-06-27T19:06:17.942066
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_183T01_9000003606_24466cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24466cztM0_level2_quad_clean.evt
Size (bytes)608,999,040119,266,560
Size580.8 MB 113.7 MB
Events in quadrant A3,212,805808,572
Events in quadrant B3,828,453819,841
Events in quadrant C5,262,575754,892
Events in quadrant D5,653,965729,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144951
B0160091
C0204141
D0217431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7165250.348918%
B71651411.967900%
C71655037.020237%
D71665567.758861%

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 7575 7166 0 0 0.00% 0.00%
B 7575 7166 40 40 0.53% 0.56%
C 7575 7166 272 272 3.59% 3.80%
D 7576 7167 533 533 7.04% 7.44%

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 13 254 11302 63.41 832 814 165.4
A 3 137 7551 40.73 832 814 165.4
A 0 226 7131 38.19 832 814 165.4
B 3 64 473809 2973.87 835 812 159.1
B 7 202 67036 416.37 835 812 159.1
B 12 111 19276 116.09 835 812 159.1
C 2 16 2023081 10991.33 789 792 184.0
C 14 238 126358 682.46 789 792 184.0
C 3 233 15453 79.68 789 792 184.0
D 12 218 2038126 10789.11 784 760 188.8
D 1 52 431796 2282.6 784 760 188.8
D 7 238 147137 775.16 784 760 188.8

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