ASTROSAT CZTI

Data Quality Report

Orbit 42882

Creation date: 2024-06-27T22:45:21.912328
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_143T01_9000005830_42882cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42882cztM0_level2_quad_clean.evt
Size (bytes)331,536,96081,316,800
Size316.2 MB 77.5 MB
Events in quadrant A2,714,216544,517
Events in quadrant B2,299,051562,903
Events in quadrant C2,726,916536,747
Events in quadrant D4,147,016471,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111242
B0104712
C0113542
D0157482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946450.909826%
B4946350.707643%
C4946380.768298%
D49463777.622321%

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 7039 4947 39 39 0.55% 0.79%
B 7039 4947 23 23 0.33% 0.46%
C 7039 4947 31 31 0.44% 0.63%
D 7039 4947 388 388 5.51% 7.84%

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 531128 4986.76 515 504 106.4
A 15 237 136538 1278.44 515 504 106.4
A 2 79 28905 266.91 515 504 106.4
B 3 112 120182 1175.23 520 506 101.8
B 0 229 64665 630.05 520 506 101.8
B 5 172 19073 182.33 520 506 101.8
C 15 214 199077 1667.61 510 512 119.1
C 5 250 185128 1550.46 510 512 119.1
C 12 2 132028 1104.51 510 512 119.1
D 1 52 1354540 11382.82 490 477 119.0
D 12 6 330462 2773.99 490 477 119.0
D 1 47 257407 2159.86 490 477 119.0

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