ASTROSAT CZTI

Data Quality Report

Orbit 04927

Creation date: 2024-06-27T14:48:57.842426
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/AS1G05_118T01_9000000622_04927cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04927cztM0_level2_quad_clean.evt
Size (bytes)577,848,96095,028,480
Size551.1 MB 90.6 MB
Events in quadrant A3,508,163596,088
Events in quadrant B3,779,624600,015
Events in quadrant C3,553,181596,265
Events in quadrant D6,143,813556,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158657
B0165862
C0160326
D0236998

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7598871.145038%
B7600861.131579%
C7598520.684391%
D76006758.881579%

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 8005 7601 0 0 0.00% 0.00%
B 8005 7600 8 8 0.10% 0.11%
C 8005 7600 6 6 0.07% 0.08%
D 8006 7601 512 512 6.40% 6.74%

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 0 31 209686 1194.99 849 829 174.8
A 15 31 19188 105.04 849 829 174.8
A 12 194 8671 44.87 849 829 174.8
B 10 16 265809 1599.29 864 840 165.7
B 0 219 59796 355.84 864 840 165.7
B 15 54 47663 282.61 864 840 165.7
C 9 247 263731 1365.53 832 834 192.5
C 1 16 33395 169.13 832 834 192.5
C 13 61 6809 31.04 832 834 192.5
D 1 7 1199323 6038.52 806 779 198.5
D 2 33 879004 4424.68 806 779 198.5
D 12 233 395783 1990.11 806 779 198.5

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