ASTROSAT CZTI

Data Quality Report

Orbit 51220

Creation date: 2025-03-18T09:05:06.380763
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/AS1C07_001T01_9000006454_51220cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51220cztM0_level2_quad_clean.evt
Size (bytes)626,440,32088,758,720
Size597.4 MB 84.6 MB
Events in quadrant A4,184,987616,572
Events in quadrant B5,490,754635,833
Events in quadrant C9,132,157424,741
Events in quadrant D3,876,534556,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169541
B0208611
C0316111
D0162691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505630.968486%
B65056179.485012%
C6505224634.527287%
D65061993.058715%

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 7595 6506 45 45 0.59% 0.69%
B 7595 6506 433 433 5.70% 6.66%
C 7595 6505 2173 2173 28.61% 33.41%
D 7595 6506 176 176 2.32% 2.71%

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 12 3 930015 5540.46 670 653 167.7
A 12 194 111275 659.48 670 653 167.7
A 9 160 93879 555.77 670 653 167.7
B 5 185 917612 6697.72 651 628 136.9
B 10 254 497991 3632.77 651 628 136.9
B 5 172 439226 3203.55 651 628 136.9
C 4 12 4977576 34049.91 532 528 146.2
C 0 145 1289018 8815.06 532 528 146.2
C 10 252 312209 2132.33 532 528 146.2
D 3 12 335951 1849.86 635 611 181.3
D 10 172 280361 1543.21 635 611 181.3
D 2 207 169837 933.51 635 611 181.3

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