ASTROSAT CZTI

Data Quality Report

Orbit 17587

Creation date: 2024-06-27T17:38:18.933650
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_056T01_9000002604_17587cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17587cztM0_level2_quad_clean.evt
Size (bytes)482,371,20069,914,880
Size460.0 MB 66.7 MB
Events in quadrant A3,948,717422,886
Events in quadrant B3,315,496434,752
Events in quadrant C3,710,214414,023
Events in quadrant D3,214,295413,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154872
B0134752
C0150262
D0133052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61861642.651148%
B61861312.117685%
C61862003.233107%
D61861141.842871%

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 7446 6186 40 40 0.54% 0.65%
B 7446 6186 0 0 0.00% 0.00%
C 7446 6186 0 0 0.00% 0.00%
D 7446 6186 4 4 0.05% 0.06%

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 14 237 697953 4163.33 844 829 167.4
A 0 13 11951 66.42 844 829 167.4
A 0 226 7439 39.48 844 829 167.4
B 12 111 18943 112.88 848 828 160.5
B 11 111 16318 96.53 848 828 160.5
B 14 111 14692 86.39 848 828 160.5
C 3 233 371519 1973.55 815 822 187.8
C 14 238 128488 679.68 815 822 187.8
C 5 218 20510 104.82 815 822 187.8
D 5 222 53720 265.75 831 810 199.1
D 2 234 19391 93.33 831 810 199.1
D 1 52 11927 55.84 831 810 199.1

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