ASTROSAT CZTI

Data Quality Report

Orbit 37929

Creation date: 2024-06-27T21:46:15.723360
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_059T01_9000005354_37929cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37929cztM0_level2_quad_clean.evt
Size (bytes)445,547,52069,163,200
Size424.9 MB 66.0 MB
Events in quadrant A2,939,200452,909
Events in quadrant B3,264,889445,576
Events in quadrant C2,674,663443,612
Events in quadrant D4,247,613374,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120773
B0132802
C0113082
D0163702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5400120.222222%
B54001282.370370%
C5400180.333333%
D540058610.851852%

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 7252 5401 3 3 0.04% 0.06%
B 7252 5401 103 103 1.42% 1.91%
C 7252 5401 11 11 0.15% 0.20%
D 7252 5401 523 523 7.21% 9.68%

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 390776 3122.14 612 601 125.0
A 12 189 149809 1193.95 612 601 125.0
A 13 6 15705 120.86 612 601 125.0
B 5 172 483683 4183.67 599 585 115.5
B 0 229 166659 1438.22 599 585 115.5
B 0 230 79181 680.65 599 585 115.5
C 15 214 228300 1668.17 586 591 136.5
C 0 10 72363 525.79 586 591 136.5
C 14 254 68516 497.61 586 591 136.5
D 12 227 1199944 8641.07 559 542 138.8
D 2 249 338024 2431.38 559 542 138.8
D 13 249 151063 1084.43 559 542 138.8

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