ASTROSAT CZTI

Data Quality Report

Orbit 41364

Creation date: 2024-06-27T22:28:10.631656
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_035T01_9000005660_41364cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41364cztM0_level2_quad_clean.evt
Size (bytes)335,393,28092,188,800
Size319.9 MB 87.9 MB
Events in quadrant A3,075,138610,373
Events in quadrant B2,705,331626,470
Events in quadrant C2,757,612599,428
Events in quadrant D3,427,019551,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125003
B0119532
C0119162
D0141492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775280.484848%
B5775300.519481%
C5775270.467532%
D57751522.632035%

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 7088 5776 15 15 0.21% 0.26%
B 7088 5776 14 14 0.20% 0.24%
C 7088 5776 21 21 0.30% 0.36%
D 7088 5776 142 142 2.00% 2.46%

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 538594 4156.87 629 615 129.4
A 13 248 44439 338.62 629 615 129.4
A 2 79 36112 274.28 629 615 129.4
B 5 255 101373 828.41 621 604 121.6
B 0 190 49309 400.4 621 604 121.6
B 0 155 39208 317.36 621 604 121.6
C 15 214 249857 1736.77 613 616 143.5
C 0 10 101898 705.76 613 616 143.5
C 15 111 7426 47.45 613 616 143.5
D 5 222 395673 2615.32 612 594 151.1
D 1 52 200347 1322.31 612 594 151.1
D 13 249 171949 1134.33 612 594 151.1

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