ASTROSAT CZTI

Data Quality Report

Orbit 20180214_C03_001T01_9000001894_level2

Creation date: 2025-11-19T13:08:12.268192
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/AS1C03_001T01_9000001894cztM0_level2.fits modeM0/AS1C03_001T01_9000001894cztM0_level2_quad_clean.evt
Size (bytes)669,654,720882,915,840
Size638.6 MB 842.0 MB
Events in quadrant A4,157,2165,912,820
Events in quadrant B3,683,9505,269,687
Events in quadrant C4,097,7485,648,602
Events in quadrant D3,365,5544,940,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01544340
B02120070
C01473950
D02039740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014800
B014800
C014800
D014800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A724667991.102586%
B72466918812.679049%
C724664190.578202%
D7246661278.455000%

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 84626 72464 0 0 0.00% 0.00%
B 84626 71373 0 0 0.00% 0.00%
C 84626 72464 0 0 0.00% 0.00%
D 84626 71996 0 0 0.00% 0.00%

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 0 29 4108 11.51 1083 1017 268.5
A 7 110 3388 8.83 1083 1017 268.5
A 9 19 3174 8.03 1083 1017 268.5
B 2 9 3260 12.37 971 928 188.5
B 12 226 2494 8.31 971 928 188.5
B 14 254 2482 8.24 971 928 188.5
C 1 80 3138 7.61 1080 1008 280.1
C 1 81 3111 7.51 1080 1008 280.1
C 12 241 2968 7.0 1080 1008 280.1
D 4 160 2460 6.28 960 877 252.0
D 6 231 2455 6.26 960 877 252.0
D 10 189 2387 5.99 960 877 252.0

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