ASTROSAT CZTI

Data Quality Report

Orbit 40427

Creation date: 2024-06-27T22:15:59.131583
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/AS1A12_022T01_9000005540_40427cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40427cztM0_level2_quad_clean.evt
Size (bytes)364,518,72090,362,880
Size347.6 MB 86.2 MB
Events in quadrant A3,047,448617,732
Events in quadrant B4,388,242585,613
Events in quadrant C2,602,705608,644
Events in quadrant D3,013,671527,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125262
B0167241
C0114251
D0128701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5660520.918728%
B56605509.717314%
C566030.053004%
D56604007.067138%

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 7364 5661 40 40 0.54% 0.71%
B 7364 5661 475 475 6.45% 8.39%
C 7364 5661 1 1 0.01% 0.02%
D 7364 5661 55 55 0.75% 0.97%

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 459532 3672.07 615 603 125.0
A 13 248 177228 1413.25 615 603 125.0
A 9 191 19386 150.29 615 603 125.0
B 7 202 1725993 15015.86 591 574 114.9
B 3 112 161872 1403.73 591 574 114.9
B 0 230 109465 947.65 591 574 114.9
C 15 214 246253 1762.42 596 601 139.4
C 14 254 19725 137.2 596 601 139.4
C 5 250 5157 32.68 596 601 139.4
D 12 227 332460 2351.01 575 561 141.2
D 12 191 149898 1057.83 575 561 141.2
D 13 249 103334 727.99 575 561 141.2

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