ASTROSAT CZTI

Data Quality Report

Orbit 20230909_T05_148T01_9000005838_level2

Creation date: 2023-11-22T14:16:45.291850
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/AS1T05_148T01_9000005838cztM0_level2.fits modeM0/AS1T05_148T01_9000005838cztM0_level2_quad_clean.evt
Size (bytes)3,080,911,6804,255,248,960
Size2.9 GB 4.0 GB
Events in quadrant A18,997,39629,248,828
Events in quadrant B17,013,06425,284,356
Events in quadrant C18,501,83428,123,813
Events in quadrant D15,426,97822,895,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012680
B012700
C012700
D012700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068880
B069720
C069720
D069720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08405680
B010470650
C07381260
D010321950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34083739171.149230%
B3408373844011.278118%
C34083718800.551583%
D340837260827.652338%

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 472175 340673 0 0 0.00% 0.00%
B 472176 340076 0 0 0.00% 0.00%
C 472175 340783 0 0 0.00% 0.00%
D 472175 340309 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 14 188 23262 15.31 4938 4644 1216.0
A 14 204 18282 11.22 4938 4644 1216.0
A 7 110 16580 9.82 4938 4644 1216.0
B 2 9 14524 11.75 4492 4295 870.3
B 3 80 11846 8.68 4492 4295 870.3
B 3 17 11770 8.59 4492 4295 870.3
C 1 81 17282 10.2 4884 4575 1246.2
C 1 80 16186 9.32 4884 4575 1246.2
C 3 203 15048 8.4 4884 4575 1246.2
D 6 38 11595 6.35 4427 4025 1192.3
D 4 160 11427 6.21 4427 4025 1192.3
D 6 67 11271 6.08 4427 4025 1192.3

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