ASTROSAT CZTI

Data Quality Report

Orbit 24401

Creation date: 2024-06-27T19:05:36.535945
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/AS1A07_001T01_9000003598_24401cztM0_level2.evt modeM0/AS1A07_001T01_9000003598_24401cztM0_level2_quad_clean.evt
Size (bytes)307,172,16069,240,960
Size292.9 MB 66.0 MB
Events in quadrant A2,121,428456,393
Events in quadrant B2,171,464463,853
Events in quadrant C2,357,254431,603
Events in quadrant D2,344,861427,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093501
B094111
C099471
D099861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4505230.510544%
B4505320.710322%
C4505471.043285%
D4504110.244227%

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 5580 4505 0 0 0.00% 0.00%
B 5580 4506 1 1 0.02% 0.02%
C 5580 4505 0 0 0.00% 0.00%
D 5579 4504 14 14 0.25% 0.31%

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 13 254 7802 65.01 550 540 111.7
A 3 137 4824 38.35 550 540 111.7
A 0 226 4810 38.23 550 540 111.7
B 3 64 18298 170.92 547 533 103.9
B 12 111 12396 114.14 547 533 103.9
B 11 111 10922 99.96 547 533 103.9
C 7 247 208978 1722.73 520 523 121.0
C 14 238 82889 680.7 520 523 121.0
C 2 16 34859 283.76 520 523 121.0
D 1 52 314156 2461.04 527 510 127.4
D 8 195 26789 206.2 527 510 127.4
D 2 234 22294 170.93 527 510 127.4

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