ASTROSAT CZTI

Data Quality Report

Orbit 46922

Creation date: 2024-06-27T23:29:28.021666
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_053T01_9000006282_46922cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46922cztM0_level2_quad_clean.evt
Size (bytes)382,858,56066,153,600
Size365.1 MB 63.1 MB
Events in quadrant A3,917,164454,045
Events in quadrant B5,411,707404,013
Events in quadrant C1,894,686443,043
Events in quadrant D2,620,486404,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140940
B0190390
C089330
D0106800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4222320.757935%
B422276018.000947%
C4223400.947194%
D42231343.173100%

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 4222 4222 22 22 0.52% 0.52%
B 4222 4222 595 595 14.09% 14.09%
C 4223 4223 44 44 1.04% 1.04%
D 4223 4223 125 125 2.96% 2.96%

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 2055892 21650.44 454 444 94.9
A 13 248 96659 1013.45 454 444 94.9
A 7 3 8065 80.27 454 444 94.9
B 3 112 3575862 42199.39 424 412 84.7
B 5 32 65405 767.08 424 412 84.7
B 15 36 25512 296.24 424 412 84.7
C 14 254 171767 1657.79 438 441 103.3
C 0 207 10979 101.97 438 441 103.3
C 13 61 2880 23.6 438 441 103.3
D 13 249 491953 4369.87 439 426 112.5
D 1 52 137218 1216.13 439 426 112.5
D 2 37 118701 1051.51 439 426 112.5

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