ASTROSAT CZTI

Data Quality Report

Orbit 42012

Creation date: 2024-06-27T22:35:43.496852
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/AS1A12_011T26_9000005732_42012cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42012cztM0_level2_quad_clean.evt
Size (bytes)302,486,40086,607,360
Size288.5 MB 82.6 MB
Events in quadrant A2,830,490584,917
Events in quadrant B2,412,529605,318
Events in quadrant C2,377,280573,639
Events in quadrant D3,189,718510,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112602
B0104712
C0100662
D0127552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4965150.302115%
B4965200.402820%
C496580.161128%
D49651943.907351%

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 7089 4966 6 6 0.08% 0.12%
B 7089 4966 9 9 0.13% 0.18%
C 7089 4966 5 5 0.07% 0.10%
D 7089 4966 158 158 2.23% 3.18%

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 10 83 530795 4581.09 565 554 115.7
A 12 189 69720 597.57 565 554 115.7
A 15 223 34794 295.82 565 554 115.7
B 0 190 90764 832.97 562 547 108.3
B 4 171 36862 335.29 562 547 108.3
B 5 255 27040 244.61 562 547 108.3
C 15 214 209075 1642.83 548 550 126.9
C 15 111 27041 208.7 548 550 126.9
C 13 61 3700 24.82 548 550 126.9
D 13 249 619210 4710.67 539 524 131.3
D 1 52 249847 1898.34 539 524 131.3
D 12 6 127637 967.84 539 524 131.3

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