ASTROSAT CZTI

Data Quality Report

Orbit 20170203_G06_164T01_9000001004_level2

Creation date: 2025-11-09T10:51:12.507730
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/AS1G06_164T01_9000001004cztM0_level2.fits modeM0/AS1G06_164T01_9000001004cztM0_level2_quad_clean.evt
Size (bytes)252,815,040308,347,200
Size241.1 MB 294.1 MB
Events in quadrant A1,481,4301,937,392
Events in quadrant B1,449,8641,920,589
Events in quadrant C1,479,8121,824,926
Events in quadrant D1,268,7121,679,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05820
D05840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620110
B0600820
C0590740
D0650040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287378142.832585%
B287416702.331165%
C287413811.325632%
D287405601.948504%

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 30341 28743 0 0 0.00% 0.00%
B 30341 28743 0 0 0.00% 0.00%
C 30341 28745 0 0 0.00% 0.00%
D 30341 28738 0 0 0.00% 0.00%

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 14 188 1468 11.05 384 359 100.3
A 0 29 1434 10.71 384 359 100.3
A 14 204 1252 8.9 384 359 100.3
B 2 9 1319 12.48 381 362 76.7
B 3 17 990 8.19 381 362 76.7
B 14 254 978 8.03 381 362 76.7
C 1 80 1087 6.9 390 360 105.4
C 1 81 1083 6.86 390 360 105.4
C 12 241 1078 6.82 390 360 105.4
D 3 14 969 6.5 361 326 98.9
D 6 231 946 6.27 361 326 98.9
D 3 31 922 6.02 361 326 98.9

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