ASTROSAT CZTI

Data Quality Report

Orbit 37365

Creation date: 2024-06-27T21:39:04.352648
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_048T01_9000005318_37365cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37365cztM0_level2_quad_clean.evt
Size (bytes)627,724,80080,824,320
Size598.6 MB 77.1 MB
Events in quadrant A2,756,445542,406
Events in quadrant B3,810,290531,757
Events in quadrant C2,935,301555,769
Events in quadrant D9,138,504433,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115723
B0148482
C0120532
D0310072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475110.200913%
B54754137.543379%
C5475581.059361%
D5475163729.899543%

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 7087 5476 3 3 0.04% 0.05%
B 7087 5476 317 317 4.47% 5.79%
C 7087 5476 47 47 0.66% 0.86%
D 7087 5476 1763 1763 24.88% 32.20%

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 286036 2263.19 624 612 126.1
A 13 248 29449 228.65 624 612 126.1
A 13 6 14755 112.14 624 612 126.1
B 5 172 1205667 10262.11 606 590 117.4
B 5 255 85294 721.32 606 590 117.4
B 0 190 39230 329.05 606 590 117.4
C 15 214 233021 1645.41 606 609 141.2
C 1 23 214029 1510.95 606 609 141.2
C 0 10 66486 466.39 606 609 141.2
D 12 235 6349893 46484.2 550 533 136.6
D 12 227 459753 3361.99 550 533 136.6
D 10 199 46496 336.5 550 533 136.6

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