ASTROSAT CZTI

Data Quality Report

Orbit 30686

Creation date: 2024-06-27T20:18:35.170428
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_094T81_9000004426_30686cztM0_level2.evt modeM0/AS1A10_094T81_9000004426_30686cztM0_level2_quad_clean.evt
Size (bytes)502,914,24085,832,640
Size479.6 MB 81.9 MB
Events in quadrant A2,146,234612,368
Events in quadrant B3,074,686613,973
Events in quadrant C2,101,332602,436
Events in quadrant D7,642,241492,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086980
B0118890
C086850
D0253880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3933170.432240%
B3934200.508388%
C3934250.635486%
D3934182446.365023%

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 3933 3933 16 16 0.41% 0.41%
B 3934 3934 0 0 0.00% 0.00%
C 3934 3934 0 0 0.00% 0.00%
D 3934 3934 2055 2055 52.24% 52.24%

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 0 13 153996 1491.22 516 508 102.9
A 13 254 6566 58.86 516 508 102.9
A 3 137 4582 39.58 516 508 102.9
B 6 159 1079910 11505.82 505 494 93.8
B 12 111 10577 107.48 505 494 93.8
B 11 111 9852 99.75 505 494 93.8
C 14 238 83109 721.98 499 504 114.4
C 3 233 59466 515.34 499 504 114.4
C 2 114 8800 72.51 499 504 114.4
D 8 195 4664145 43988.48 456 445 106.0
D 12 227 678799 6398.3 456 445 106.0
D 2 250 260834 2456.01 456 445 106.0

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