ASTROSAT CZTI

Data Quality Report

Orbit 51382

Creation date: 2025-03-29T10:47:11.942837
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_51382cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51382cztM0_level2_quad_clean.evt
Size (bytes)618,724,80071,821,440
Size590.1 MB 68.5 MB
Events in quadrant A8,118,101378,434
Events in quadrant B3,199,108568,602
Events in quadrant C7,373,619357,195
Events in quadrant D3,777,714478,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013313
B013216
C013418
D013115

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305632462
B0150271575
C0298634162
D0173542118

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162
B0173
C0195
D0151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5597169530.284081%
B56181622.883588%
C5568198335.614224%
D56101622.887701%

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 8713 5639 1461 1461 16.77% 25.91%
B 8713 5665 61 61 0.70% 1.08%
C 8712 5585 1799 1799 20.65% 32.21%
D 8713 5654 110 110 1.26% 1.95%

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 3106795 25102.85 496 484 123.7
A 12 3 1895015 15310.16 496 484 123.7
A 4 175 383967 3099.02 496 484 123.7
B 5 185 224533 1754.92 597 575 127.6
B 4 81 193663 1513.02 597 575 127.6
B 6 51 78856 613.4 597 575 127.6
C 15 179 4297212 31431.81 487 482 136.7
C 7 64 462532 3380.03 487 482 136.7
C 10 171 234672 1713.17 487 482 136.7
D 11 176 929777 5744.34 575 554 161.8
D 2 153 141887 873.7 575 554 161.8
D 3 12 112101 689.57 575 554 161.8

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