ASTROSAT CZTI

Data Quality Report

Orbit 17015

Creation date: 2024-06-27T17:30:48.921320
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/AS1A05_206T01_9000002528_17015cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17015cztM0_level2_quad_clean.evt
Size (bytes)918,789,120189,187,200
Size876.2 MB 180.4 MB
Events in quadrant A6,713,7781,225,412
Events in quadrant B6,752,0851,243,983
Events in quadrant C5,892,4021,206,291
Events in quadrant D7,612,7671,181,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284692
B0284152
C0256672
D0313692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126173222.552112%
B126182061.632588%
C126181010.800444%
D126183222.551910%

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 13908 12620 201 201 1.45% 1.59%
B 13909 12621 64 64 0.46% 0.51%
C 13909 12621 0 0 0.00% 0.00%
D 13909 12621 213 213 1.53% 1.69%

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 15 174 1064131 3662.5 1454 1417 290.2
A 4 2 36044 119.34 1454 1417 290.2
A 12 189 25452 82.83 1454 1417 290.2
B 7 220 478303 1718.49 1463 1423 277.5
B 3 64 95600 339.38 1463 1423 277.5
B 0 219 82385 291.76 1463 1423 277.5
C 14 238 219654 666.06 1407 1412 327.7
C 3 233 173424 524.97 1407 1412 327.7
C 13 61 10163 26.71 1407 1412 327.7
D 1 52 1756415 5077.02 1417 1371 345.7
D 15 0 346150 997.38 1417 1371 345.7
D 2 234 60608 171.36 1417 1371 345.7

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