ASTROSAT CZTI

Data Quality Report

Orbit 27776

Creation date: 2024-06-27T19:44:15.199611
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/AS1A10_009T02_9000004014_27776cztM0_level2.evt modeM0/AS1A10_009T02_9000004014_27776cztM0_level2_quad_clean.evt
Size (bytes)486,406,080114,114,240
Size463.9 MB 108.8 MB
Events in quadrant A3,234,990784,198
Events in quadrant B3,426,280796,945
Events in quadrant C3,707,705726,991
Events in quadrant D3,937,339711,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136191
B0141662
C0150611
D0160071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6264490.782248%
B6263711.133642%
C62631111.772314%
D62631161.852148%

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 7539 6264 2 2 0.03% 0.03%
B 7538 6263 5 5 0.07% 0.08%
C 7538 6263 4 4 0.05% 0.06%
D 7538 6264 89 89 1.18% 1.42%

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 10613 58.92 838 826 166.1
A 3 137 7400 39.57 838 826 166.1
A 0 226 7200 38.37 838 826 166.1
B 4 52 54431 345.33 830 812 155.3
B 3 64 54024 342.71 830 812 155.3
B 0 190 42064 265.68 830 812 155.3
C 3 233 457993 2536.73 777 781 180.2
C 14 238 129245 712.75 777 781 180.2
C 6 112 79466 436.56 777 781 180.2
D 1 52 926186 4959.77 784 765 186.6
D 2 234 23501 121.85 784 765 186.6
D 2 250 17023 87.13 784 765 186.6

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