ASTROSAT CZTI

Data Quality Report

Orbit 07558

Creation date: 2024-06-27T15:21:31.068920
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/AS1T01_155T01_9000001042_07558cztM0_level2.evt modeM0/AS1T01_155T01_9000001042_07558cztM0_level2_quad_clean.evt
Size (bytes)441,622,08094,821,120
Size421.2 MB 90.4 MB
Events in quadrant A2,878,992637,026
Events in quadrant B2,908,209637,851
Events in quadrant C4,051,704605,996
Events in quadrant D3,150,930594,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120322
B0121511
C0157261
D0129591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56581372.421350%
B56581202.120891%
C56582624.630612%
D56581442.545069%

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 6848 5658 2 2 0.03% 0.04%
B 6848 5659 1 1 0.01% 0.02%
C 6848 5658 133 133 1.94% 2.35%
D 6848 5658 29 29 0.42% 0.51%

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 3 1 36201 235.91 733 720 150.4
A 1 162 9345 57.35 733 720 150.4
A 13 251 6889 41.02 733 720 150.4
B 0 214 29628 206.5 731 716 140.0
B 0 230 19940 137.3 731 716 140.0
B 0 219 18511 127.1 731 716 140.0
C 9 68 1312846 8086.54 698 703 162.3
C 10 22 10776 62.08 698 703 162.3
C 13 61 5346 28.61 698 703 162.3
D 2 152 186597 1049.6 712 692 177.1
D 2 244 132873 746.28 712 692 177.1
D 2 14 80057 448.09 712 692 177.1

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