ASTROSAT CZTI

Data Quality Report

Orbit 23742

Creation date: 2024-06-27T18:58:12.540940
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/AS1A08_009T01_9000003516_23742cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23742cztM0_level2_quad_clean.evt
Size (bytes)487,152,000100,681,920
Size464.6 MB 96.0 MB
Events in quadrant A3,104,835647,577
Events in quadrant B3,493,070661,934
Events in quadrant C3,280,022640,658
Events in quadrant D4,406,813618,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140501
B0150241
C0143161
D0180301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6902650.941756%
B69021151.666184%
C6902941.361924%
D6902630.912779%

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 7292 6902 0 0 0.00% 0.00%
B 7292 6902 7 7 0.10% 0.10%
C 7292 6903 0 0 0.00% 0.00%
D 7291 6902 19 19 0.26% 0.28%

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 13 254 11455 65.56 805 787 162.7
A 3 137 7267 39.82 805 787 162.7
A 0 226 7016 38.28 805 787 162.7
B 0 229 230051 1489.74 806 784 153.9
B 3 64 39785 253.42 806 784 153.9
B 0 189 34812 221.11 806 784 153.9
C 14 238 123192 671.88 773 776 182.2
C 10 9 72494 393.63 773 776 182.2
C 7 247 53403 288.84 773 776 182.2
D 8 195 1273008 6711.69 777 752 189.6
D 1 52 131395 689.2 777 752 189.6
D 2 234 27937 143.41 777 752 189.6

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