ASTROSAT CZTI

Data Quality Report

Orbit 07890

Creation date: 2024-06-27T15:25:16.003718
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/AS1A02_071T01_9000001078_07890cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07890cztM0_level2_quad_clean.evt
Size (bytes)552,507,84082,356,480
Size526.9 MB 78.5 MB
Events in quadrant A3,731,804513,219
Events in quadrant B2,958,160539,647
Events in quadrant C6,335,657507,608
Events in quadrant D3,285,545498,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154133
B0129432
C0232512
D0141592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62302033.258427%
B6230420.674157%
C62302604.173355%
D6230851.364366%

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 7250 6232 126 126 1.74% 2.02%
B 7250 6232 1 1 0.01% 0.02%
C 7250 6232 159 159 2.19% 2.55%
D 7250 6232 70 70 0.97% 1.12%

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 15 239 925106 6243.99 724 708 148.0
A 0 226 6725 40.64 724 708 148.0
A 12 194 6410 38.51 724 708 148.0
B 5 255 31440 217.72 739 719 141.1
B 0 230 20491 140.12 739 719 141.1
B 4 239 18224 124.06 739 719 141.1
C 1 16 3547994 21430.94 714 718 165.5
C 13 61 5381 28.17 714 718 165.5
C 12 4 2801 12.58 714 718 165.5
D 1 52 197224 1114.65 717 697 176.3
D 4 95 137399 775.34 717 697 176.3
D 14 34 107480 605.64 717 697 176.3

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