ASTROSAT CZTI

Data Quality Report

Orbit 26786

Creation date: 2024-06-27T19:32:55.100725
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/AS1A09_079T01_9000003864_26786cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26786cztM0_level2_quad_clean.evt
Size (bytes)409,034,88074,819,520
Size390.1 MB 71.4 MB
Events in quadrant A2,880,652496,663
Events in quadrant B2,130,613510,253
Events in quadrant C2,210,878493,498
Events in quadrant D4,846,015435,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116300
B095010
C097020
D0176310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4698180.383142%
B4699100.212811%
C4698350.744998%
D469874815.921669%

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 4698 4698 6 6 0.13% 0.13%
B 4699 4699 1 1 0.02% 0.02%
C 4698 4698 5 5 0.11% 0.11%
D 4698 4698 644 644 13.71% 13.71%

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 814133 7518.06 533 521 108.2
A 13 254 7700 66.34 533 521 108.2
A 10 67 5062 41.96 533 521 108.2
B 10 246 26124 251.15 534 519 101.9
B 12 111 12353 116.08 534 519 101.9
B 11 111 10993 102.74 534 519 101.9
C 14 238 83853 681.37 518 520 122.3
C 2 16 52564 425.53 518 520 122.3
C 15 208 37303 300.75 518 520 122.3
D 1 52 2491690 21257.26 473 459 117.2
D 2 250 362360 3088.04 473 459 117.2
D 1 239 171780 1461.85 473 459 117.2

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