ASTROSAT CZTI

Data Quality Report

Orbit 39770

Creation date: 2024-06-27T22:08:48.532485
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_022T01_9000005494_39770cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39770cztM0_level2_quad_clean.evt
Size (bytes)354,228,48094,628,160
Size337.8 MB 90.2 MB
Events in quadrant A3,187,823641,084
Events in quadrant B3,314,957626,690
Events in quadrant C2,815,049621,986
Events in quadrant D3,345,504572,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132013
B0137012
C0121112
D0141432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5765180.312229%
B57652664.614050%
C5765200.346921%
D57651352.341717%

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 7107 5766 12 12 0.17% 0.21%
B 7107 5766 209 209 2.94% 3.62%
C 7107 5766 9 9 0.13% 0.16%
D 7107 5766 106 106 1.49% 1.84%

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 474251 3675.81 629 616 128.9
A 2 79 229091 1773.16 629 616 128.9
A 13 248 38621 294.95 629 616 128.9
B 5 172 563034 4650.91 617 601 120.9
B 5 255 169404 1395.88 617 601 120.9
B 5 32 82193 674.71 617 601 120.9
C 15 214 238189 1654.57 613 617 143.6
C 15 208 82664 571.42 613 617 143.6
C 9 187 53237 366.47 613 617 143.6
D 12 227 406875 2684.83 609 591 151.3
D 12 217 246081 1622.26 609 591 151.3
D 12 233 157595 1037.52 609 591 151.3

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