ASTROSAT CZTI

Data Quality Report

Orbit 29636

Creation date: 2024-06-27T20:06:18.773961
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/AS1T03_286T01_9000004268_29636cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29636cztM0_level2_quad_clean.evt
Size (bytes)676,785,60096,240,960
Size645.4 MB 91.8 MB
Events in quadrant A3,595,318614,216
Events in quadrant B3,762,188626,872
Events in quadrant C3,793,774603,625
Events in quadrant D8,823,735533,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159571
B0162281
C0162891
D0314231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76901692.197659%
B76912242.912495%
C76913474.511767%
D7691125916.369783%

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 7955 7690 16 16 0.20% 0.21%
B 7956 7691 56 56 0.70% 0.73%
C 7956 7691 7 7 0.09% 0.09%
D 7956 7691 1128 1128 14.18% 14.67%

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 12 96 87785 474.05 900 880 183.3
A 0 13 34647 184.19 900 880 183.3
A 13 254 13332 67.92 900 880 183.3
B 15 33 116985 673.0 894 870 172.5
B 0 229 79066 453.22 894 870 172.5
B 12 111 22042 122.71 894 870 172.5
C 14 238 218308 1084.18 858 862 200.6
C 14 254 115538 571.77 858 862 200.6
C 10 22 74590 367.6 858 862 200.6
D 7 238 2855799 14709.75 819 797 194.1
D 7 80 2208276 11373.53 819 797 194.1
D 8 195 353224 1815.8 819 797 194.1

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