ASTROSAT CZTI

Data Quality Report

Orbit 39532

Creation date: 2024-06-27T22:05:46.985995
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_018T01_9000005488_39532cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39532cztM0_level2_quad_clean.evt
Size (bytes)364,556,16086,883,840
Size347.7 MB 82.9 MB
Events in quadrant A2,835,722607,987
Events in quadrant B2,254,081627,592
Events in quadrant C5,492,795492,863
Events in quadrant D2,525,711554,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115622
B0100781
C0196881
D0109331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4960240.483871%
B496060.120968%
C496098519.858871%
D4960250.504032%

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 6934 4961 15 15 0.22% 0.30%
B 6934 4961 1 1 0.01% 0.02%
C 6934 4961 870 870 12.55% 17.54%
D 6934 4961 25 25 0.36% 0.50%

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 382485 3408.06 562 553 112.1
A 13 248 209281 1862.53 562 553 112.1
A 15 222 53741 474.61 562 553 112.1
B 15 85 27818 254.46 563 548 107.2
B 12 111 13030 116.47 563 548 107.2
B 11 111 11736 104.39 563 548 107.2
C 9 187 3230986 26442.74 523 525 122.2
C 15 214 208227 1700.13 523 525 122.2
C 0 10 9313 71.93 523 525 122.2
D 2 249 147199 1086.97 556 540 134.9
D 12 227 101136 745.57 556 540 134.9
D 13 249 84190 619.98 556 540 134.9

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