ASTROSAT CZTI

Data Quality Report

Orbit 43863

Creation date: 2024-06-27T22:56:40.538858
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/AS1A13_087T01_9000005908_43863cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43863cztM0_level2_quad_clean.evt
Size (bytes)551,678,400105,543,360
Size526.1 MB 100.7 MB
Events in quadrant A4,163,166734,347
Events in quadrant B3,461,673764,790
Events in quadrant C8,696,939579,632
Events in quadrant D3,594,744663,216

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162802
B0146602
C0302783
D0152172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65061121.721488%
B65061342.059637%
C6505165925.503459%
D65051352.075327%

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 7631 6506 39 39 0.51% 0.60%
B 7631 6506 83 83 1.09% 1.28%
C 7630 6505 1579 1579 20.69% 24.27%
D 7630 6505 93 93 1.22% 1.43%

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 1023539 6659.76 744 729 153.6
A 15 223 124295 804.57 744 729 153.6
A 7 3 71354 459.86 744 729 153.6
B 5 235 301946 2052.96 746 724 146.7
B 0 183 110280 746.67 746 724 146.7
B 4 170 78550 530.42 746 724 146.7
C 0 239 2941629 18553.23 668 672 158.5
C 3 233 2534503 15984.85 668 672 158.5
C 15 158 553528 3487.73 668 672 158.5
D 12 233 267869 1472.45 731 710 181.4
D 2 249 178344 979.03 731 710 181.4
D 1 52 89216 487.8 731 710 181.4

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