ASTROSAT CZTI

Data Quality Report

Orbit 44761

Creation date: 2024-06-27T23:06:12.042470
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_004T12_9000006020_44761cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44761cztM0_level2_quad_clean.evt
Size (bytes)576,996,48098,712,000
Size550.3 MB 94.1 MB
Events in quadrant A6,538,819652,619
Events in quadrant B3,889,880689,746
Events in quadrant C2,979,197678,519
Events in quadrant D7,462,898528,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241183
B0158061
C0134381
D0265841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62946179.802987%
B62942554.051478%
C6294550.873848%
D6295121619.316918%

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 7349 6295 438 438 5.96% 6.96%
B 7349 6295 156 156 2.12% 2.48%
C 7349 6295 28 28 0.38% 0.44%
D 7350 6295 1072 1072 14.59% 17.03%

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 1893811 13727.89 673 660 137.9
A 15 223 1879960 13627.46 673 660 137.9
A 13 248 142018 1025.04 673 660 137.9
B 0 189 746157 5545.96 685 666 134.4
B 5 255 201403 1493.35 685 666 134.4
B 15 36 73858 544.5 685 666 134.4
C 14 254 171349 1059.31 686 691 161.1
C 1 3 108546 669.48 686 691 161.1
C 12 16 11075 64.46 686 691 161.1
D 1 52 3229438 20285.59 631 610 159.2
D 13 249 716790 4499.51 631 610 159.2
D 5 222 291483 1827.45 631 610 159.2

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