ASTROSAT CZTI

Data Quality Report

Orbit 39822

Creation date: 2024-06-27T22:09:18.553257
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_9000005498_39822cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39822cztM0_level2_quad_clean.evt
Size (bytes)596,882,88073,287,360
Size569.2 MB 69.9 MB
Events in quadrant A2,896,622615,989
Events in quadrant B3,431,924611,228
Events in quadrant C11,294,189145,287
Events in quadrant D4,083,380496,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114541
B0134490
C0369610
D0154470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997571.140684%
B49972114.222534%
C4997395479.127476%
D499753210.646388%

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 6970 4998 46 46 0.66% 0.92%
B 6970 4998 157 157 2.25% 3.14%
C 6970 4997 3635 3635 52.15% 72.74%
D 6970 4998 487 487 6.99% 9.74%

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 397600 3374.24 580 568 117.7
A 9 143 175526 1486.91 580 568 117.7
A 13 248 52747 443.45 580 568 117.7
B 4 171 910953 8513.1 562 547 106.9
B 5 172 152048 1416.67 562 547 106.9
B 5 255 50017 462.59 562 547 106.9
C 9 187 9655851 136752.4 303 305 70.6
C 15 208 311456 4406.86 303 305 70.6
C 15 214 125025 1766.42 303 305 70.6
D 12 227 1614664 12356.66 534 516 130.6
D 2 249 191297 1460.47 534 516 130.6
D 13 249 137364 1047.6 534 516 130.6

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