ASTROSAT CZTI

Data Quality Report

Orbit 40910

Creation date: 2024-06-27T22:22:04.906258
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_102T01_9000005576_40910cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40910cztM0_level2_quad_clean.evt
Size (bytes)317,001,60088,833,600
Size302.3 MB 84.7 MB
Events in quadrant A2,720,106603,370
Events in quadrant B2,939,859597,343
Events in quadrant C2,556,647599,898
Events in quadrant D3,133,120542,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111443
B0121802
C0106032
D0128442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4936110.222853%
B49362394.841977%
C4936641.296596%
D49361222.471637%

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 7088 4937 4 4 0.06% 0.08%
B 7088 4937 179 179 2.53% 3.63%
C 7088 4937 47 47 0.66% 0.95%
D 7088 4937 106 106 1.50% 2.15%

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 510852 4499.04 555 544 113.4
A 12 189 32713 283.61 555 544 113.4
A 13 248 10035 83.68 555 544 113.4
B 5 32 695070 6647.28 549 536 104.5
B 5 255 30549 287.25 549 536 104.5
B 0 245 17572 163.05 549 536 104.5
C 15 214 208438 1624.69 554 560 127.9
C 0 10 159176 1239.68 554 560 127.9
C 14 83 15939 120.2 554 560 127.9
D 12 79 246228 1862.71 544 530 131.9
D 2 249 202491 1531.13 544 530 131.9
D 12 233 149236 1127.38 544 530 131.9

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