ASTROSAT CZTI

Data Quality Report

Orbit 20181113_A05_225T02_9000002510_level2

Creation date: 2025-11-25T20:27:51.210117
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/AS1A05_225T02_9000002510cztM0_level2.fits modeM0/AS1A05_225T02_9000002510cztM0_level2_quad_clean.evt
Size (bytes)43,300,80066,216,960
Size41.3 MB 63.1 MB
Events in quadrant A240,892376,419
Events in quadrant B258,016460,044
Events in quadrant C258,596436,271
Events in quadrant D225,362403,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205510
B097380
C095500
D0104680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4670100821.584582%
B4669791.692011%
C4669711.520668%
D4669811.734847%

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 5305 4667 0 0 0.00% 0.00%
B 5304 4669 0 0 0.00% 0.00%
C 5304 4669 0 0 0.00% 0.00%
D 5304 4668 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 29 242 10.47 62 59 17.5
A 14 188 241 10.42 62 59 17.5
A 14 204 218 9.1 62 59 17.5
B 2 9 221 9.69 68 65 16.1
B 12 226 186 7.51 68 65 16.1
B 2 8 178 7.02 68 65 16.1
C 1 80 240 9.04 68 64 19.5
C 1 81 233 8.68 68 64 19.5
C 15 65 192 6.57 68 64 19.5
D 6 38 184 6.69 64 58 18.8
D 7 3 180 6.48 64 58 18.8
D 10 113 177 6.32 64 58 18.8

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