ASTROSAT CZTI

Data Quality Report

Orbit 33974

Creation date: 2024-06-27T20:54:49.784903
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_33974cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33974cztM0_level2_quad_clean.evt
Size (bytes)548,818,56032,938,560
Size523.4 MB 31.4 MB
Events in quadrant A7,076,75612,413
Events in quadrant B1,955,153270,592
Events in quadrant C2,492,746260,416
Events in quadrant D4,868,181213,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233300
B078710
C097270
D0167920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33603360100.000000%
B336060.178571%
C33601354.017857%
D336099229.523810%

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 3360 3360 2025 2025 60.27% 60.27%
B 3360 3360 5 5 0.15% 0.15%
C 3360 3360 105 105 3.12% 3.12%
D 3360 3360 970 970 28.87% 28.87%

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 6889297 610741.26 47 46 11.3
A 13 6 1536 132.09 47 46 11.3
A 13 254 799 66.75 47 46 11.3
B 5 172 82323 1015.52 434 424 80.6
B 0 190 70824 872.94 434 424 80.6
B 0 229 30585 373.99 434 424 80.6
C 4 254 451248 4773.56 420 425 94.4
C 15 214 146289 1544.49 420 425 94.4
C 0 10 111195 1172.89 420 425 94.4
D 12 33 1917161 19759.58 381 372 97.0
D 8 195 473493 4877.26 381 372 97.0
D 2 250 375286 3864.87 381 372 97.0

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