ASTROSAT CZTI

Data Quality Report

Orbit 39905

Creation date: 2024-06-27T22:10:09.170328
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_044T09_9000005506_39905cztM0_level2.fits modeM0/AS1A12_044T09_9000005506_39905cztM0_level2_quad_clean.evt
Size (bytes)484,528,320126,668,160
Size462.1 MB 120.8 MB
Events in quadrant A4,424,697845,777
Events in quadrant B3,903,393867,094
Events in quadrant C3,638,136835,194
Events in quadrant D5,353,031735,754

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183863
B0171112
C0160432
D0217402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7933620.781545%
B7933350.441195%
C7933160.201689%
D79334545.722930%

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 9276 7934 53 53 0.57% 0.67%
B 9276 7934 22 22 0.24% 0.28%
C 9276 7934 6 6 0.06% 0.08%
D 9276 7934 430 430 4.64% 5.42%

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 607631 3486.15 847 831 174.1
A 6 10 254341 1456.45 847 831 174.1
A 13 248 113422 646.85 847 831 174.1
B 0 230 201043 1218.62 847 822 164.3
B 5 255 177935 1077.98 847 822 164.3
B 4 171 50335 301.36 847 822 164.3
C 15 214 336917 1706.57 835 839 196.9
C 0 10 23641 115.79 835 839 196.9
C 10 70 13047 61.99 835 839 196.9
D 13 249 911122 4601.64 803 781 197.8
D 12 227 883723 4463.15 803 781 197.8
D 2 250 203777 1026.12 803 781 197.8

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