ASTROSAT CZTI

Data Quality Report

Orbit 16590

Creation date: 2024-06-27T17:24:47.653822
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/AS1C04_001T01_9000002446_16590cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16590cztM0_level2_quad_clean.evt
Size (bytes)495,576,000131,546,880
Size472.6 MB 125.5 MB
Events in quadrant A3,369,826885,429
Events in quadrant B3,741,335890,929
Events in quadrant C4,048,854866,863
Events in quadrant D3,371,780852,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148683
B0158032
C0166942
D0151242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7017480.684053%
B70171221.738635%
C7017981.396608%
D7017430.612797%

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 7868 7019 5 5 0.06% 0.07%
B 7868 7019 14 14 0.18% 0.20%
C 7868 7019 0 0 0.00% 0.00%
D 7868 7019 23 23 0.29% 0.33%

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 224176 1394.02 810 792 160.2
A 9 143 20894 125.45 810 792 160.2
A 0 226 7029 38.92 810 792 160.2
B 15 35 171758 1130.65 812 791 151.2
B 7 220 86832 569.01 812 791 151.2
B 0 189 54112 352.63 812 791 151.2
C 3 233 849376 4649.63 786 789 182.5
C 14 238 121754 662.8 786 789 182.5
C 7 247 13779 71.18 786 789 182.5
D 5 222 150599 788.43 790 767 190.0
D 1 52 70834 368.7 790 767 190.0
D 10 70 51516 267.05 790 767 190.0

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