ASTROSAT CZTI

Data Quality Report

Orbit 39271

Creation date: 2024-06-27T22:02:32.324975
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_037T01_9000005456_39271cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39271cztM0_level2_quad_clean.evt
Size (bytes)537,281,28090,285,120
Size512.4 MB 86.1 MB
Events in quadrant A5,710,377558,517
Events in quadrant B2,749,388682,987
Events in quadrant C2,645,083643,265
Events in quadrant D8,366,890473,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207532
B0114401
C0108981
D0285891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537688616.480655%
B5376150.279018%
C537660.111607%
D5376126623.549107%

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 7289 5377 719 719 9.86% 13.37%
B 7289 5377 3 3 0.04% 0.06%
C 7289 5377 0 0 0.00% 0.00%
D 7289 5377 1186 1186 16.27% 22.06%

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 15 222 3110322 26534.05 581 572 117.2
A 10 83 354404 3019.08 581 572 117.2
A 13 254 6141 47.52 581 572 117.2
B 0 190 175227 1456.09 625 608 119.9
B 5 172 45711 376.1 625 608 119.9
B 5 255 37753 309.74 625 608 119.9
C 15 214 245620 1741.71 610 615 140.7
C 0 10 7896 51.76 610 615 140.7
C 9 187 7030 45.6 610 615 140.7
D 12 235 6014236 44402.14 561 547 135.4
D 2 249 70658 517.67 561 547 135.4
D 6 1 25199 182.02 561 547 135.4

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