ASTROSAT CZTI

Data Quality Report

Orbit 46341

Creation date: 2024-06-27T23:21:57.396815
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_070T05_9000006198_46341cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46341cztM0_level2_quad_clean.evt
Size (bytes)648,432,000100,480,320
Size618.4 MB 95.8 MB
Events in quadrant A12,303,188433,268
Events in quadrant B4,415,830760,076
Events in quadrant C3,208,657723,736
Events in quadrant D3,551,549655,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412592
B0176712
C0143042
D0152632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6747312346.287239%
B67471922.845709%
C67481171.733847%
D67481762.608180%

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 8622 6749 2551 2551 29.59% 37.80%
B 8622 6749 20 20 0.23% 0.30%
C 8623 6750 12 12 0.14% 0.18%
D 8623 6750 55 55 0.64% 0.81%

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 15 223 7350526 58257.65 602 590 126.2
A 10 83 2585934 20492.16 602 590 126.2
A 13 248 21169 163.11 602 590 126.2
B 3 112 1177670 7595.02 776 751 155.0
B 5 172 62384 397.74 776 751 155.0
B 5 32 49684 315.78 776 751 155.0
C 12 2 94271 517.95 764 766 180.5
C 12 250 83516 458.38 764 766 180.5
C 12 249 37527 203.63 764 766 180.5
D 13 249 288784 1510.37 760 736 190.7
D 5 235 194247 1014.67 760 736 190.7
D 5 171 37502 192.78 760 736 190.7

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