ASTROSAT CZTI

Data Quality Report

Orbit 44186

Creation date: 2024-06-27T23:00:09.677802
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_074T04_9000005962_44186cztM0_level2.fits modeM0/AS1A13_074T04_9000005962_44186cztM0_level2_quad_clean.evt
Size (bytes)446,849,280111,182,400
Size426.1 MB 106.0 MB
Events in quadrant A5,132,353742,826
Events in quadrant B3,498,203772,600
Events in quadrant C3,327,832730,402
Events in quadrant D4,070,621661,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202422
B0148182
C0144302
D0168192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65902303.490137%
B65901161.760243%
C6590420.637329%
D65891993.020185%

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 7615 6591 82 82 1.08% 1.24%
B 7615 6591 13 13 0.17% 0.20%
C 7615 6591 25 25 0.33% 0.38%
D 7614 6590 134 134 1.76% 2.03%

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 10 83 1412864 8960.08 755 739 157.6
A 15 223 742914 4709.18 755 739 157.6
A 7 3 40214 250.47 755 739 157.6
B 0 200 171728 1139.02 758 736 150.1
B 5 172 110665 732.26 758 736 150.1
B 0 189 85762 566.38 758 736 150.1
C 14 254 205130 1165.13 740 745 175.4
C 3 233 87936 497.04 740 745 175.4
C 15 208 56456 317.59 740 745 175.4
D 2 249 580810 3163.43 729 706 183.4
D 13 249 218375 1186.99 729 706 183.4
D 12 222 116767 632.9 729 706 183.4

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