ASTROSAT CZTI

Data Quality Report

Orbit 24609

Creation date: 2024-06-27T19:07:52.143204
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/AS1T03_189T01_9000003614_24609cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24609cztM0_level2_quad_clean.evt
Size (bytes)605,502,720110,338,560
Size577.5 MB 105.2 MB
Events in quadrant A3,515,425740,501
Events in quadrant B5,548,382722,664
Events in quadrant C4,630,763714,341
Events in quadrant D4,200,168707,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146352
B0209432
C0184242
D0168012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65551672.547674%
B655570310.724638%
C65552864.363082%
D65552163.295195%

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 8925 6558 26 26 0.29% 0.40%
B 8925 6558 397 397 4.45% 6.05%
C 8925 6557 23 23 0.26% 0.35%
D 8925 6556 86 86 0.96% 1.31%

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 12 96 205392 1202.08 856 841 170.2
A 6 16 10326 55.74 856 841 170.2
A 13 254 9493 50.84 856 841 170.2
B 3 64 2273378 14582.4 826 805 155.8
B 12 111 19126 117.56 826 805 155.8
B 11 111 17021 104.05 826 805 155.8
C 7 247 1177056 6099.28 831 838 192.8
C 14 238 131954 679.9 831 838 192.8
C 3 233 70257 359.97 831 838 192.8
D 8 195 353443 1749.54 843 820 201.6
D 9 1 283444 1402.24 843 820 201.6
D 1 255 141460 697.79 843 820 201.6

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