ASTROSAT CZTI

Data Quality Report

Orbit 33970

Creation date: 2024-06-27T20:54:46.787209
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/AS1A11_037T01_9000004858_33970cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33970cztM0_level2_quad_clean.evt
Size (bytes)604,244,16076,273,920
Size576.3 MB 72.7 MB
Events in quadrant A2,833,624506,369
Events in quadrant B3,431,738514,218
Events in quadrant C3,102,386506,845
Events in quadrant D8,564,522401,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119023
B0136512
C0122642
D0292362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54251392.562212%
B54251853.410138%
C5425871.603687%
D5425203137.437788%

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 7158 5426 121 121 1.69% 2.23%
B 7158 5426 96 96 1.34% 1.77%
C 7158 5426 66 66 0.92% 1.22%
D 7158 5426 1886 1886 26.35% 34.76%

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 15 169 340005 2664.58 637 624 127.4
A 10 83 13829 103.68 637 624 127.4
A 13 6 8993 65.71 637 624 127.4
B 5 172 397588 3263.73 640 624 121.6
B 0 182 311856 2558.86 640 624 121.6
B 0 190 90511 739.03 640 624 121.6
C 15 214 238375 1626.01 637 642 146.2
C 0 10 204615 1395.1 637 642 146.2
C 3 233 120000 816.37 637 642 146.2
D 12 33 5301622 40058.08 528 513 132.3
D 8 195 630009 4756.82 528 513 132.3
D 13 249 286988 2164.76 528 513 132.3

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