ASTROSAT CZTI

Data Quality Report

Orbit 51145

Creation date: 2025-03-21T15:32:59.177368
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_001T02_9000006452_51145cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51145cztM0_level2_quad_clean.evt
Size (bytes)580,867,20097,600,320
Size554.0 MB 93.1 MB
Events in quadrant A5,969,975626,217
Events in quadrant B3,909,813704,107
Events in quadrant C6,805,319569,177
Events in quadrant D4,286,209578,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225742
B0165312
C0250752
D0176702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68453685.376187%
B68452073.024105%
C684595713.981008%
D68452764.032140%

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 7940 6846 306 306 3.85% 4.47%
B 7940 6846 111 111 1.40% 1.62%
C 7940 6846 789 789 9.94% 11.52%
D 7940 6846 264 264 3.32% 3.86%

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 971639 5652.62 695 677 171.8
A 4 4 627055 3646.57 695 677 171.8
A 12 80 380476 2211.06 695 677 171.8
B 5 185 266827 1772.48 709 685 150.2
B 10 247 135923 900.67 709 685 150.2
B 0 213 105910 700.79 709 685 150.2
C 12 247 1458499 8031.68 660 655 181.5
C 4 12 639353 3518.77 660 655 181.5
C 1 60 541574 2980.08 660 655 181.5
D 2 62 514997 2739.64 674 650 187.7
D 8 176 272312 1446.99 674 650 187.7
D 10 172 182781 970.11 674 650 187.7

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