ASTROSAT CZTI

Data Quality Report

Orbit 46760

Creation date: 2024-06-27T23:27:17.713282
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/AS1A13_034T01_9000006264_46760cztM0_level2.fits modeM0/AS1A13_034T01_9000006264_46760cztM0_level2_quad_clean.evt
Size (bytes)483,382,080101,753,280
Size461.0 MB 97.0 MB
Events in quadrant A6,635,696667,149
Events in quadrant B3,742,189692,502
Events in quadrant C2,944,615674,395
Events in quadrant D4,072,119598,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240621
B0155202
C0135391
D0167592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64282674.153703%
B6428981.524580%
C6428490.762290%
D64273084.792283%

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 7428 6428 85 85 1.14% 1.32%
B 7428 6428 32 32 0.43% 0.50%
C 7428 6428 23 23 0.31% 0.36%
D 7428 6428 246 246 3.31% 3.83%

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 3356090 23091.43 695 679 145.3
A 9 191 386832 2657.45 695 679 145.3
A 13 248 108852 744.43 695 679 145.3
B 3 112 517549 3775.13 697 676 136.9
B 15 201 151675 1102.86 697 676 136.9
B 0 198 99717 723.37 697 676 136.9
C 14 254 119303 728.53 687 689 162.8
C 15 208 62436 379.25 687 689 162.8
C 1 241 28655 171.77 687 689 162.8
D 13 249 796204 4684.91 676 654 169.8
D 1 52 398572 2343.3 676 654 169.8
D 2 37 47314 274.78 676 654 169.8

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