ASTROSAT CZTI

Data Quality Report

Orbit 32687

Creation date: 2024-06-27T20:40:49.454989
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_057T03_9000004722_32687cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32687cztM0_level2_quad_clean.evt
Size (bytes)568,880,64058,582,080
Size542.5 MB 55.9 MB
Events in quadrant A5,754,185313,199
Events in quadrant B2,879,856388,249
Events in quadrant C2,797,664379,878
Events in quadrant D5,465,034347,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203573
B0114542
C0113052
D0198292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4911103521.075137%
B4911490.997760%
C49111012.056608%
D491149310.038689%

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 6975 4912 912 912 13.08% 18.57%
B 6975 4912 36 36 0.52% 0.73%
C 6975 4912 82 82 1.18% 1.67%
D 6975 4912 445 445 6.38% 9.06%

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 15 249 2781305 25977.52 543 534 107.0
A 0 253 802258 7489.58 543 534 107.0
A 7 16 27367 250.67 543 534 107.0
B 3 26 254377 2227.47 600 588 113.9
B 0 219 47969 415.86 600 588 113.9
B 3 32 47388 410.76 600 588 113.9
C 9 236 250719 1894.49 575 580 132.0
C 0 10 173520 1309.8 575 580 132.0
C 9 54 40342 301.15 575 580 132.0
D 12 227 960846 7216.21 560 549 133.1
D 2 250 400033 3001.95 560 549 133.1
D 2 249 381381 2861.78 560 549 133.1

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