ASTROSAT CZTI

Data Quality Report

Orbit 51397

Creation date: 2025-03-30T08:18:08.001623
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_001T03_9000006456_51397cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51397cztM0_level2_quad_clean.evt
Size (bytes)838,684,80095,114,880
Size799.8 MB 90.7 MB
Events in quadrant A8,533,337638,053
Events in quadrant B4,678,376746,654
Events in quadrant C12,682,038370,910
Events in quadrant D4,580,889610,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306371
B0190061
C0427641
D0191741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73806709.078591%
B73802313.130081%
C7381362349.085490%
D73813354.538680%

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 7410 7381 521 521 7.03% 7.06%
B 7410 7381 135 135 1.82% 1.83%
C 7411 7382 3447 3447 46.51% 46.69%
D 7411 7382 289 289 3.90% 3.91%

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 3090789 16653.51 753 735 185.5
A 15 174 732637 3944.51 753 735 185.5
A 4 175 560012 3014.16 753 735 185.5
B 5 185 362974 2174.16 780 749 166.6
B 10 254 359292 2152.06 780 749 166.6
B 5 172 146499 874.82 780 749 166.6
C 4 12 6677691 45040.38 537 531 148.2
C 15 179 1413121 9528.54 537 531 148.2
C 15 205 924607 6233.3 537 531 148.2
D 10 172 734284 3518.25 740 712 208.5
D 11 176 405120 1939.56 740 712 208.5
D 8 176 160978 768.65 740 712 208.5

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