ASTROSAT CZTI

Data Quality Report

Orbit 40136

Creation date: 2024-06-27T22:12:44.901894
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_004T01_9000005520_40136cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40136cztM0_level2_quad_clean.evt
Size (bytes)1,689,264,000209,413,440
Size1.6 GB 199.7 MB
Events in quadrant A8,473,1431,673,233
Events in quadrant B8,354,9771,703,988
Events in quadrant C35,069,312397,929
Events in quadrant D9,425,7171,488,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346274
B0355373
C01149173
D0389273

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156031250.801128%
B156033302.114978%
C156031247179.926937%
D156034422.832789%

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 19842 15606 106 106 0.53% 0.68%
B 19842 15606 248 248 1.25% 1.59%
C 19841 15602 12072 12072 60.84% 77.37%
D 19842 15606 433 433 2.18% 2.77%

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 1165043 3339.68 1708 1675 348.3
A 13 248 399007 1140.62 1708 1675 348.3
A 12 189 155226 440.8 1708 1675 348.3
B 5 255 1252309 3832.47 1695 1645 326.3
B 4 171 277283 844.65 1695 1645 326.3
B 0 230 59350 176.83 1695 1645 326.3
C 9 187 30536629 133893.73 987 992 228.1
C 15 214 392024 1714.61 987 992 228.1
C 14 254 85513 370.61 987 992 228.1
D 12 227 1045881 2573.53 1657 1611 405.8
D 13 249 604071 1484.72 1657 1611 405.8
D 2 249 478551 1175.38 1657 1611 405.8

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