ASTROSAT CZTI

Data Quality Report

Orbit 40465

Creation date: 2024-06-27T22:16:27.357438
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_022T01_9000005540_40465cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40465cztM0_level2_quad_clean.evt
Size (bytes)350,576,64094,942,080
Size334.3 MB 90.5 MB
Events in quadrant A2,982,009649,217
Events in quadrant B2,713,222662,790
Events in quadrant C2,915,646636,340
Events in quadrant D3,900,744509,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127653
B0122952
C0125892
D0158222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5965130.217938%
B5965230.385583%
C5965390.653814%
D596598316.479464%

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 9041 5967 5 5 0.06% 0.08%
B 9041 5967 14 14 0.15% 0.23%
C 9041 5967 31 31 0.34% 0.52%
D 9041 5967 154 154 1.70% 2.58%

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 504849 3930.4 628 616 128.3
A 3 1 26539 202.06 628 616 128.3
A 12 189 16486 123.7 628 616 128.3
B 4 170 95578 784.46 625 607 121.1
B 0 230 69798 571.52 625 607 121.1
B 3 112 57834 472.69 625 607 121.1
C 15 214 258545 1789.15 614 617 144.2
C 14 254 207292 1433.63 614 617 144.2
C 9 187 26024 176.24 614 617 144.2
D 2 250 597199 4363.73 561 546 136.7
D 2 120 329432 2405.37 561 546 136.7
D 12 191 206514 1506.38 561 546 136.7

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