ASTROSAT CZTI

Data Quality Report

Orbit 33611

Creation date: 2024-06-27T20:50:46.478238
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/AS1T04_076T01_9000004810_33611cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33611cztM0_level2_quad_clean.evt
Size (bytes)479,257,92084,856,320
Size457.1 MB 80.9 MB
Events in quadrant A2,741,719561,247
Events in quadrant B4,027,144554,015
Events in quadrant C3,198,863568,877
Events in quadrant D4,206,771533,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112463
B0153212
C0127542
D0160682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5016541.076555%
B50164188.333333%
C50161032.053429%
D50161603.189793%

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 7078 5017 34 34 0.48% 0.68%
B 7078 5017 333 333 4.70% 6.64%
C 7078 5017 85 85 1.20% 1.69%
D 7078 5017 127 127 1.79% 2.53%

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 15 237 131410 981.15 668 657 133.3
A 13 6 12737 90.65 668 657 133.3
A 15 169 9082 63.22 668 657 133.3
B 5 172 979540 7975.13 650 636 122.7
B 5 255 201836 1639.18 650 636 122.7
B 0 213 114269 925.77 650 636 122.7
C 0 10 320243 2137.92 653 662 149.5
C 15 214 214979 1433.73 653 662 149.5
C 3 233 66402 439.79 653 662 149.5
D 8 195 651676 4055.48 643 631 160.5
D 2 250 387994 2412.95 643 631 160.5
D 2 152 190036 1179.84 643 631 160.5

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