ASTROSAT CZTI

Data Quality Report

Orbit 38938

Creation date: 2024-06-27T21:58:23.428629
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/AS1T05_064T01_9000005416_38938cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38938cztM0_level2_quad_clean.evt
Size (bytes)430,833,60091,500,480
Size410.9 MB 87.3 MB
Events in quadrant A2,775,723653,502
Events in quadrant B2,744,923658,990
Events in quadrant C2,556,784636,234
Events in quadrant D7,468,730460,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115052
B0115651
C0106211
D0257931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5170230.444874%
B5170350.676983%
C517040.077369%
D5170131125.357834%

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 7083 5171 13 13 0.18% 0.25%
B 7083 5171 21 21 0.30% 0.41%
C 7083 5171 0 0 0.00% 0.00%
D 7083 5171 1417 1417 20.01% 27.40%

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 390307 3233.71 599 587 120.5
A 13 248 62419 513.05 599 587 120.5
A 13 254 7579 58.02 599 587 120.5
B 5 172 268566 2424.44 592 578 110.5
B 0 190 71526 641.85 592 578 110.5
B 0 230 32561 289.34 592 578 110.5
C 15 214 211400 1545.01 590 594 136.4
C 14 254 16069 113.42 590 594 136.4
C 1 128 10891 75.47 590 594 136.4
D 12 227 1940658 15562.54 517 503 124.7
D 2 250 1141055 9148.7 517 503 124.7
D 12 235 968528 7764.81 517 503 124.7

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