ASTROSAT CZTI

Data Quality Report

Orbit 44477

Creation date: 2024-06-27T23:03:45.916543
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_072T03_9000006000_44477cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44477cztM0_level2_quad_clean.evt
Size (bytes)405,993,60091,186,560
Size387.2 MB 87.0 MB
Events in quadrant A4,041,882603,606
Events in quadrant B3,364,542614,280
Events in quadrant C2,903,835601,510
Events in quadrant D4,258,095528,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014020
B013715
C013713
D013817

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B041
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202782920
B0166962533
C0147431912
D0199463290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58602704.607509%
B59304667.858347%
C59382073.486022%
D58964748.039349%

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 7266 6064 0 0 0.00% 0.00%
B 7294 6119 162 162 2.22% 2.65%
C 7291 6133 4 4 0.05% 0.07%
D 7287 6111 226 226 3.10% 3.70%

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 1400522 9857.94 683 666 142.0
A 3 137 8114 52.45 683 666 142.0
A 0 243 6212 39.06 683 666 142.0
B 5 172 664956 4945.27 672 651 134.3
B 0 229 22024 159.1 672 651 134.3
B 12 111 17358 124.37 672 651 134.3
C 3 233 62384 384.13 681 683 160.6
C 14 254 57227 352.02 681 683 160.6
C 2 14 53383 328.09 681 683 160.6
D 13 249 695209 4116.65 669 648 168.7
D 5 235 385113 2278.71 669 648 168.7
D 12 233 232651 1375.08 669 648 168.7

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