ASTROSAT CZTI

Data Quality Report

Orbit 20181208_A05_010T02_9000002556_level2

Creation date: 2025-11-26T05:07:02.783089
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_010T02_9000002556cztM0_level2.fits modeM0/AS1A05_010T02_9000002556cztM0_level2_quad_clean.evt
Size (bytes)1,744,153,9201,735,853,760
Size1.6 GB 1.6 GB
Events in quadrant A10,724,60610,661,682
Events in quadrant B10,348,89410,578,015
Events in quadrant C10,315,7109,885,572
Events in quadrant D8,833,6768,852,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03841830
B03803640
C03790750
D05005650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02710
B02710
C02710
D02710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037360
B037360
C037360
D037360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18388718300.995176%
B18388721101.147444%
C18388724901.354092%
D183887104905.704590%

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 210718 183880 0 0 0.00% 0.00%
B 210718 183880 0 0 0.00% 0.00%
C 210718 183879 0 0 0.00% 0.00%
D 210718 183824 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 9022 9.24 2793 2617 693.4
A 7 110 8596 8.62 2793 2617 693.4
A 9 19 8211 8.07 2793 2617 693.4
B 2 9 8234 10.6 2727 2600 531.5
B 2 8 6945 8.17 2727 2600 531.5
B 3 17 6786 7.87 2727 2600 531.5
C 12 241 7307 6.82 2726 2536 699.1
C 3 126 6930 6.28 2726 2536 699.1
C 2 191 6913 6.26 2726 2536 699.1
D 3 14 6659 6.48 2523 2295 673.8
D 7 3 6273 5.9 2523 2295 673.8
D 10 189 6180 5.77 2523 2295 673.8

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