ASTROSAT CZTI

Data Quality Report

Orbit 20161128_G06_028T01_9000000834_level2

Creation date: 2025-11-08T00:09:31.818489
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_028T01_9000000834cztM0_level2.fits modeM0/AS1G06_028T01_9000000834cztM0_level2_quad_clean.evt
Size (bytes)304,968,960310,317,120
Size290.8 MB 295.9 MB
Events in quadrant A1,876,8541,938,557
Events in quadrant B1,788,1181,873,098
Events in quadrant C1,821,6721,803,623
Events in quadrant D1,523,1881,557,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687960
B0797810
C0697100
D01152890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06580
B06580
C06580
D06580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323895421.673408%
B3238914714.541665%
C323894551.404798%
D3238925107.749545%

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 39084 32389 0 0 0.00% 0.00%
B 39084 32373 0 0 0.00% 0.00%
C 39084 32385 0 0 0.00% 0.00%
D 39083 32370 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 0 29 1885 11.53 487 455 124.1
A 14 188 1851 11.25 487 455 124.1
A 7 110 1632 9.49 487 455 124.1
B 2 9 1503 11.19 469 448 94.3
B 12 226 1334 9.4 469 448 94.3
B 5 128 1235 8.35 469 448 94.3
C 1 80 1448 7.75 480 445 129.4
C 1 81 1412 7.47 480 445 129.4
C 2 191 1247 6.2 480 445 129.4
D 11 82 1165 6.53 435 395 117.8
D 3 14 1137 6.3 435 395 117.8
D 1 19 1135 6.28 435 395 117.8

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