ASTROSAT CZTI

Data Quality Report

Orbit 45272

Creation date: 2024-06-27T23:11:47.742774
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_024T03_9000006064_45272cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45272cztM0_level2_quad_clean.evt
Size (bytes)445,348,800105,816,960
Size424.7 MB 100.9 MB
Events in quadrant A5,015,583714,889
Events in quadrant B3,102,432753,223
Events in quadrant C2,916,968704,004
Events in quadrant D4,972,363602,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195271
B0134101
C0130901
D0190969

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61561111.803119%
B61561041.689409%
C6157751.218126%
D61544697.621059%

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 7366 6156 13 13 0.18% 0.21%
B 7366 6156 47 47 0.64% 0.76%
C 7367 6158 22 22 0.30% 0.36%
D 7367 6156 482 482 6.54% 7.83%

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 2252217 15413.19 702 686 146.1
A 13 248 34687 232.76 702 686 146.1
A 7 16 14053 91.51 702 686 146.1
B 4 171 208353 1485.1 708 687 139.8
B 7 221 26176 182.28 708 687 139.8
B 12 111 17045 116.98 708 687 139.8
C 12 2 100427 621.13 688 691 160.6
C 14 254 97129 600.59 688 691 160.6
C 3 233 24623 149.04 688 691 160.6
D 13 249 1035107 6291.54 659 640 164.4
D 2 249 549836 3340.17 659 640 164.4
D 11 241 367829 2233.21 659 640 164.4

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