ASTROSAT CZTI

Data Quality Report

Orbit 20220506_A09_142T05_9000005118_level2

Creation date: 2022-05-13T16:33:17.189395
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/AS1A09_142T05_9000005118cztM0_level2_bc.evt modeM0/AS1A09_142T05_9000005118cztM0_level2_quad_clean.evt
Size (bytes)1,382,676,480367,191,360
Size1.3 GB 350.2 MB
Events in quadrant A7,289,9892,237,786
Events in quadrant B9,841,0302,242,559
Events in quadrant C12,819,4772,178,446
Events in quadrant D9,586,3322,107,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0696360
B0801100
C0858750
D0789040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34262420.122585%
B342629632.810694%
C3426212163.549121%
D342625941.733699%

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 45523 34269 0 0 0.00% 0.00%
B 45523 34261 186 186 0.41% 0.54%
C 45523 34262 679 679 1.49% 1.98%
D 45523 34261 110 110 0.24% 0.32%

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 665302 1758.08 1687 1653 377.5
A 13 6 56613 145.59 1687 1653 377.5
A 13 254 34284 86.44 1687 1653 377.5
B 5 172 2582361 7673.94 1682 1641 336.3
B 5 255 534315 1583.94 1682 1641 336.3
B 4 206 123104 361.18 1682 1641 336.3
C 0 10 2937685 7703.56 1636 1615 381.1
C 0 207 1802744 4725.74 1636 1615 381.1
C 15 214 1334370 3496.84 1636 1615 381.1
D 13 249 1372841 3439.55 1656 1602 398.7
D 2 250 492501 1231.35 1656 1602 398.7
D 12 6 321999 803.67 1656 1602 398.7

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