ASTROSAT CZTI

Data Quality Report

Orbit 48485

Creation date: 2024-09-16T11:17:44.460628
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/AS1A13_081T01_9000006428_48485cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48485cztM0_level2_quad_clean.evt
Size (bytes)883,661,760201,885,120
Size842.7 MB 192.5 MB
Events in quadrant A13,863,0071,302,711
Events in quadrant B6,073,1211,382,565
Events in quadrant C5,468,8641,315,765
Events in quadrant D6,295,1271,209,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499663
B0278084
C0266523
D0288173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130555304.059747%
B130551571.202604%
C13055700.536193%
D130551581.210264%

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 14885 13057 144 144 0.97% 1.10%
B 14885 13057 35 35 0.24% 0.27%
C 14885 13057 1 1 0.01% 0.01%
D 14885 13058 110 110 0.74% 0.84%

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 8106555 28258.85 1377 1345 286.8
A 12 189 368726 1280.88 1377 1345 286.8
A 15 192 29836 99.33 1377 1345 286.8
B 12 18 114429 416.8 1386 1343 271.3
B 0 197 90881 330.01 1386 1343 271.3
B 8 234 83347 302.24 1386 1343 271.3
C 12 2 26618 78.22 1373 1376 322.7
C 14 254 21029 60.9 1373 1376 322.7
C 14 246 18135 51.93 1373 1376 322.7
D 2 249 393198 1148.68 1370 1327 341.1
D 2 120 199414 580.65 1370 1327 341.1
D 12 233 100359 290.29 1370 1327 341.1

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