ASTROSAT CZTI

Data Quality Report

Orbit 20181012_A05_069T04_9000002428_level2

Creation date: 2025-11-25T04:41:03.852004
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_069T04_9000002428cztM0_level2.fits modeM0/AS1A05_069T04_9000002428cztM0_level2_quad_clean.evt
Size (bytes)610,603,200525,715,200
Size582.3 MB 501.4 MB
Events in quadrant A3,476,9502,822,644
Events in quadrant B3,671,9923,117,702
Events in quadrant C3,626,0282,826,680
Events in quadrant D3,229,8682,670,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01869960
B01479500
C01776000
D01459920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013340
B013340
C013340
D013340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65327848712.991566%
B6532711301.729760%
C6532738895.953128%
D653278981.374623%

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 76612 64338 0 0 0.00% 0.00%
B 76612 65315 0 0 0.00% 0.00%
C 76612 65228 0 0 0.00% 0.00%
D 76612 65315 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 3354 11.3 903 848 221.7
A 7 110 2766 8.65 903 848 221.7
A 0 30 2627 8.02 903 848 221.7
B 2 9 2946 10.56 973 928 191.1
B 2 8 2515 8.3 973 928 191.1
B 14 254 2467 8.05 973 928 191.1
C 1 80 2683 7.24 956 886 248.4
C 1 81 2642 7.07 956 886 248.4
C 12 241 2596 6.89 956 886 248.4
D 3 14 2400 6.33 921 836 247.1
D 6 231 2353 6.14 921 836 247.1
D 6 38 2235 5.66 921 836 247.1

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