ASTROSAT CZTI

Data Quality Report

Orbit 42817

Creation date: 2024-06-27T22:44:35.938869
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_001T12_9000005826_42817cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42817cztM0_level2_quad_clean.evt
Size (bytes)392,071,68090,912,960
Size373.9 MB 86.7 MB
Events in quadrant A3,189,863625,092
Events in quadrant B4,038,279593,197
Events in quadrant C3,567,450587,597
Events in quadrant D3,280,877553,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129312
B0158222
C0141552
D0136612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5616220.391738%
B56164187.443020%
C5616230.409544%
D56161312.332621%

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 7258 5617 7 7 0.10% 0.12%
B 7258 5616 331 331 4.56% 5.89%
C 7258 5617 15 15 0.21% 0.27%
D 7258 5617 129 129 1.78% 2.30%

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 10 83 699053 5546.73 611 598 125.9
A 12 189 77021 606.91 611 598 125.9
A 13 6 18871 145.11 611 598 125.9
B 5 255 1126158 10020.58 587 571 112.3
B 0 229 255811 2272.28 587 571 112.3
B 5 172 145744 1292.41 587 571 112.3
C 3 233 859649 6227.63 591 594 137.9
C 15 214 237361 1716.42 591 594 137.9
C 14 254 72694 522.68 591 594 137.9
D 1 47 345053 2370.12 595 578 145.3
D 12 233 209495 1437.43 595 578 145.3
D 10 118 111476 763.02 595 578 145.3

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