ASTROSAT CZTI

Data Quality Report

Orbit 40348

Creation date: 2024-06-27T22:15:10.857664
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_056T02_9000005538_40348cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40348cztM0_level2_quad_clean.evt
Size (bytes)347,725,44095,137,920
Size331.6 MB 90.7 MB
Events in quadrant A3,357,611649,769
Events in quadrant B2,622,023670,726
Events in quadrant C2,837,645633,835
Events in quadrant D3,624,093539,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133123
B0114952
C0118652
D0145672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55221332.408548%
B5522320.579500%
C5522540.977907%
D55224648.402753%

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 9229 5524 114 114 1.24% 2.06%
B 9228 5522 20 20 0.22% 0.36%
C 9229 5524 47 47 0.51% 0.85%
D 9229 5524 163 163 1.77% 2.95%

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 451656 3646.69 605 595 123.7
A 13 248 349063 2817.26 605 595 123.7
A 6 10 163578 1317.67 605 595 123.7
B 4 170 118364 1002.38 607 591 117.5
B 5 255 59122 498.17 607 591 117.5
B 0 230 34928 292.25 607 591 117.5
C 15 214 252993 1796.53 596 602 140.5
C 14 254 237421 1685.68 596 602 140.5
C 0 10 13465 91.56 596 602 140.5
D 12 128 505462 3607.51 569 554 140.0
D 12 227 477788 3409.79 569 554 140.0
D 12 191 135005 960.64 569 554 140.0

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