ASTROSAT CZTI

Data Quality Report

Orbit 37847

Creation date: 2024-06-27T21:45:15.560804
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/AS1C07_001T12_9000005352_37847cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37847cztM0_level2_quad_clean.evt
Size (bytes)960,022,080138,395,520
Size915.5 MB 132.0 MB
Events in quadrant A5,356,546897,358
Events in quadrant B6,107,927892,086
Events in quadrant C5,208,862889,626
Events in quadrant D11,665,216757,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229354
B0257283
C0224613
D0423063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10888220.202057%
B108882952.709405%
C10888360.330639%
D10888208219.121969%

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 15002 10891 9 9 0.06% 0.08%
B 15002 10891 195 195 1.30% 1.79%
C 15002 10891 25 25 0.17% 0.23%
D 15002 10891 1783 1783 11.89% 16.37%

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 10 83 629299 2621.47 1201 1181 239.6
A 9 143 21131 83.26 1201 1181 239.6
A 13 254 17296 67.26 1201 1181 239.6
B 5 172 980784 4334.72 1184 1154 226.0
B 4 171 86992 379.82 1184 1154 226.0
B 4 81 85969 375.29 1184 1154 226.0
C 15 214 456080 1674.81 1168 1173 271.6
C 0 10 160860 587.91 1168 1173 271.6
C 14 67 18507 63.82 1168 1173 271.6
D 1 52 3437264 13011.92 1081 1051 264.1
D 2 249 1790586 6776.44 1081 1051 264.1
D 13 249 1508892 5709.75 1081 1051 264.1

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