ASTROSAT CZTI

Data Quality Report

Orbit 44229

Creation date: 2024-06-27T23:00:45.266880
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/AS1A13_071T06_9000005972_44229cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44229cztM0_level2_quad_clean.evt
Size (bytes)585,656,640104,826,240
Size558.5 MB 100.0 MB
Events in quadrant A7,926,239602,184
Events in quadrant B4,306,122759,054
Events in quadrant C3,312,691742,641
Events in quadrant D5,633,665620,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282512
B0171042
C0143162
D0211612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452143722.272164%
B64522453.797272%
C6452560.867948%
D645266410.291383%

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 7637 6453 1150 1150 15.06% 17.82%
B 7637 6453 80 80 1.05% 1.24%
C 7637 6453 28 28 0.37% 0.43%
D 7637 6453 503 503 6.59% 7.79%

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 15 223 3785890 26648.92 687 674 142.0
A 10 83 1448530 10193.29 687 674 142.0
A 7 3 11162 73.84 687 674 142.0
B 0 200 283348 1971.48 741 721 143.4
B 0 219 243360 1692.54 741 721 143.4
B 4 171 209287 1454.87 741 721 143.4
C 14 254 245395 1408.46 740 744 173.7
C 2 14 69384 395.16 740 744 173.7
C 4 254 52150 295.94 740 744 173.7
D 12 233 814438 4637.76 705 686 175.5
D 1 52 803131 4573.32 705 686 175.5
D 13 249 484089 2755.03 705 686 175.5

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