ASTROSAT CZTI

Data Quality Report

Orbit 23117

Creation date: 2024-06-27T18:50:08.202235
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/AS1A08_008T01_9000003414_23117cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23117cztM0_level2_quad_clean.evt
Size (bytes)583,819,200126,915,840
Size556.8 MB 121.0 MB
Events in quadrant A7,416,565787,139
Events in quadrant B3,157,601925,291
Events in quadrant C3,324,296865,363
Events in quadrant D3,360,919831,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261852
B0133102
C0137372
D0142443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225149624.032129%
B6225500.803213%
C62251001.606426%
D6224851.365681%

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 7585 6226 1199 1199 15.81% 19.26%
B 7585 6226 3 3 0.04% 0.05%
C 7585 6226 12 12 0.16% 0.19%
D 7584 6225 50 50 0.66% 0.80%

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 6 16 4701957 33508.8 704 691 140.3
A 13 254 10419 69.34 704 691 140.3
A 0 226 5966 37.6 704 691 140.3
B 0 190 40175 273.09 782 763 144.3
B 0 189 16806 111.16 782 763 144.3
B 12 111 16593 109.69 782 763 144.3
C 9 15 159405 919.39 746 753 172.6
C 14 238 119803 689.89 746 753 172.6
C 2 16 60568 346.63 746 753 172.6
D 12 233 200500 1122.87 740 721 177.9
D 1 52 195629 1095.49 740 721 177.9
D 13 153 39617 218.62 740 721 177.9

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