ASTROSAT CZTI

Data Quality Report

Orbit 53530

Creation date: 2025-08-21T12:33:16.854891
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/AS1A14_004T05_9000006502_53530cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53530cztM0_level2_quad_clean.evt
Size (bytes)664,332,48087,500,160
Size633.6 MB 83.4 MB
Events in quadrant A4,029,274624,022
Events in quadrant B4,365,842649,316
Events in quadrant C7,372,971489,847
Events in quadrant D8,329,829441,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163541
B0173481
C0263646
D0291231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63663024.743952%
B63663795.953503%
C6365147323.142184%
D6366179328.165253%

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 7361 6367 155 155 2.11% 2.43%
B 7361 6367 199 199 2.70% 3.13%
C 7360 6366 1134 1134 15.41% 17.81%
D 7361 6366 1499 1499 20.36% 23.55%

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 15 174 504420 2933.99 695 678 171.7
A 3 63 301421 1751.65 695 678 171.7
A 12 80 157553 913.7 695 678 171.7
B 10 28 837650 5794.91 683 660 144.4
B 2 249 250148 1727.33 683 660 144.4
B 8 128 104554 719.31 683 660 144.4
C 15 224 3368904 19468.6 629 624 173.0
C 15 217 627832 3625.25 629 624 173.0
C 15 147 423704 2445.4 629 624 173.0
D 12 1 2150418 12676.79 593 567 169.6
D 6 239 1290275 7604.88 593 567 169.6
D 3 12 957700 5643.82 593 567 169.6

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