ASTROSAT CZTI

Data Quality Report

Orbit 17283

Creation date: 2024-06-27T17:34:29.032870
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_059T01_9000002554_17283cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17283cztM0_level2_quad_clean.evt
Size (bytes)531,198,720100,710,720
Size506.6 MB 96.0 MB
Events in quadrant A3,945,337668,957
Events in quadrant B3,263,510695,360
Events in quadrant C3,234,181642,191
Events in quadrant D5,199,798586,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160332
B0138252
C0138072
D0200236

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65552473.768116%
B6555871.327231%
C6555851.296720%
D655470310.726274%

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 7830 6556 147 147 1.88% 2.24%
B 7830 6556 1 1 0.01% 0.02%
C 7830 6556 1 1 0.01% 0.02%
D 7829 6554 616 616 7.87% 9.40%

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 14 235 801001 4854.99 818 802 164.8
A 0 226 7306 39.46 818 802 164.8
A 3 137 5922 31.06 818 802 164.8
B 12 111 18425 112.24 830 812 156.9
B 11 111 15872 95.97 830 812 156.9
B 14 111 14027 84.22 830 812 156.9
C 14 238 121230 661.48 781 788 182.1
C 3 233 44573 240.47 781 788 182.1
C 5 112 25363 134.97 781 788 182.1
D 11 176 1941672 10676.61 752 732 181.8
D 10 66 162107 887.68 752 732 181.8
D 10 70 157162 860.48 752 732 181.8

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