ASTROSAT CZTI

Data Quality Report

Orbit 20180603_G08_066T01_9000002138_level2

Creation date: 2025-11-22T17:37:49.198669
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/AS1G08_066T01_9000002138cztM0_level2.fits modeM0/AS1G08_066T01_9000002138cztM0_level2_quad_clean.evt
Size (bytes)1,374,909,1201,301,451,840
Size1.3 GB 1.2 GB
Events in quadrant A8,406,9067,830,098
Events in quadrant B8,071,6027,825,950
Events in quadrant C8,338,9507,495,393
Events in quadrant D7,066,1246,511,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02210
C02210
D02220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028940
B028940
C028940
D028940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02997270
B03121080
C03067110
D03494740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14235720151.415456%
B14235728291.987257%
C14235718801.320624%
D14235779115.557156%

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 169012 142358 0 0 0.00% 0.00%
B 169012 142356 0 0 0.00% 0.00%
C 169012 142357 0 0 0.00% 0.00%
D 169012 141586 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 8112 11.12 2188 2046 545.4
A 7 110 6713 8.56 2188 2046 545.4
A 15 236 6234 7.68 2188 2046 545.4
B 2 9 7023 12.0 2135 2040 415.2
B 5 128 5340 7.95 2135 2040 415.2
B 3 17 5321 7.9 2135 2040 415.2
C 1 80 6322 7.59 2202 2049 563.3
C 1 81 6113 7.21 2202 2049 563.3
C 12 241 5892 6.82 2202 2049 563.3
D 3 14 5105 6.06 2018 1836 539.8
D 6 231 5055 5.96 2018 1836 539.8
D 10 189 4874 5.63 2018 1836 539.8

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