ASTROSAT CZTI

Data Quality Report

Orbit 40520

Creation date: 2024-06-27T22:17:06.424777
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_070T01_9000005544_40520cztM0_level2.fits modeM0/AS1T05_070T01_9000005544_40520cztM0_level2_quad_clean.evt
Size (bytes)287,611,20078,094,080
Size274.3 MB 74.5 MB
Events in quadrant A2,538,802544,265
Events in quadrant B2,663,156539,016
Events in quadrant C2,275,749524,594
Events in quadrant D2,808,217432,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01009525
B01076218
C0951219
D01140944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4609100.216967%
B46101593.449024%
C461180.173498%
D461258512.684302%

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 6736 4612 2 2 0.03% 0.04%
B 6736 4614 132 132 1.96% 2.86%
C 6734 4612 6 6 0.09% 0.13%
D 6735 4613 120 120 1.78% 2.60%

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 391832 3621.66 527 516 108.0
A 9 191 75806 696.82 527 516 108.0
A 12 189 16306 146.14 527 516 108.0
B 4 171 410284 4061.08 511 499 100.9
B 3 112 142335 1405.63 511 499 100.9
B 0 230 43327 424.44 511 499 100.9
C 15 214 198553 1654.97 509 512 119.7
C 14 254 57747 478.3 509 512 119.7
C 9 187 29309 240.65 509 512 119.7
D 12 227 352047 2914.01 482 467 120.7
D 12 0 168455 1392.34 482 467 120.7
D 12 191 144931 1197.36 482 467 120.7

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