ASTROSAT CZTI

Data Quality Report

Orbit 50917

Creation date: 2025-02-26T12:00:45.003266
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/AS1C07_001T01_9000006450_50917cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50917cztM0_level2_quad_clean.evt
Size (bytes)760,098,24085,092,480
Size724.9 MB 81.2 MB
Events in quadrant A13,667,682276,664
Events in quadrant B3,350,026698,514
Events in quadrant C4,736,275608,441
Events in quadrant D5,851,905516,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453501
B0149561
C0185971
D0222051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840412760.336257%
B68411011.476392%
C68412283.332846%
D684187312.761292%

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 7439 6839 3870 3870 52.02% 56.59%
B 7441 6841 7 7 0.09% 0.10%
C 7441 6842 154 154 2.07% 2.25%
D 7441 6841 562 562 7.55% 8.22%

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 4 4 6692986 51298.47 522 507 130.5
A 14 254 3662290 28067.9 522 507 130.5
A 4 3 235985 1804.96 522 507 130.5
B 7 252 230888 1500.98 719 693 153.4
B 8 128 54538 351.09 719 693 153.4
B 0 245 32838 209.6 719 693 153.4
C 5 10 732273 3792.18 700 691 192.9
C 12 247 569259 2947.19 700 691 192.9
C 13 3 146166 754.07 700 691 192.9
D 7 45 1526975 8225.43 666 642 185.6
D 2 249 489574 2634.86 666 642 185.6
D 8 176 306428 1647.88 666 642 185.6

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