ASTROSAT CZTI

Data Quality Report

Orbit 28664

Creation date: 2024-06-27T19:54:39.508792
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/AS1A10_073T08_9000004112_28664cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28664cztM0_level2_quad_clean.evt
Size (bytes)642,525,120107,504,640
Size612.8 MB 102.5 MB
Events in quadrant A4,043,190706,050
Events in quadrant B4,791,672699,400
Events in quadrant C4,066,259670,046
Events in quadrant D6,037,610646,017

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167542
B0191613
C0168842
D0230792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76782393.112790%
B76774495.848639%
C76774165.418783%
D76774986.486909%

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 8743 7678 14 14 0.16% 0.18%
B 8742 7677 111 111 1.27% 1.45%
C 8742 7678 42 42 0.48% 0.55%
D 8742 7678 378 378 4.32% 4.92%

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 15 174 175818 859.84 1001 981 203.3
A 13 254 14624 67.1 1001 981 203.3
A 3 137 9762 43.18 1001 981 203.3
B 10 245 893423 4718.97 978 954 189.1
B 0 156 23821 120.91 978 954 189.1
B 12 111 23351 118.43 978 954 189.1
C 14 238 190018 855.5 938 943 221.0
C 2 16 153656 690.98 938 943 221.0
C 14 254 59055 262.94 938 943 221.0
D 1 52 1916210 8362.91 952 928 229.0
D 8 195 361246 1573.3 952 928 229.0
D 2 250 87865 379.6 952 928 229.0

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