ASTROSAT CZTI

Data Quality Report

Orbit 23696

Creation date: 2024-06-27T18:57:37.767032
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/AS1C05_012T03_9000003500_23696cztM0_level2.evt modeM0/AS1C05_012T03_9000003500_23696cztM0_level2_quad_clean.evt
Size (bytes)475,479,360119,070,720
Size453.5 MB 113.6 MB
Events in quadrant A3,112,920790,220
Events in quadrant B3,288,072823,617
Events in quadrant C3,198,415790,203
Events in quadrant D4,354,245744,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135992
B0140062
C0137512
D0174552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569170.258791%
B6569450.685036%
C6569590.898158%
D65692063.135942%

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 7849 6570 1 1 0.01% 0.02%
B 7849 6570 0 0 0.00% 0.00%
C 7849 6570 0 0 0.00% 0.00%
D 7849 6570 165 165 2.10% 2.51%

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 10238 58.5 806 792 161.5
A 0 226 6939 38.07 806 792 161.5
A 3 137 6709 36.65 806 792 161.5
B 0 183 34343 225.41 814 795 148.8
B 0 229 21479 138.98 814 795 148.8
B 12 111 17699 113.58 814 795 148.8
C 14 238 128306 711.31 785 790 179.3
C 13 61 5414 25.79 785 790 179.3
C 7 247 4215 19.11 785 790 179.3
D 13 174 699647 3804.37 772 751 183.7
D 1 52 603030 3278.45 772 751 183.7
D 9 35 79778 430.18 772 751 183.7

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