ASTROSAT CZTI

Data Quality Report

Orbit 51409

Creation date: 2025-03-31T03:15:49.158107
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_51409cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51409cztM0_level2_quad_clean.evt
Size (bytes)627,762,24088,905,600
Size598.7 MB 84.8 MB
Events in quadrant A5,357,575596,292
Events in quadrant B4,232,245660,579
Events in quadrant C9,097,964426,407
Events in quadrant D4,053,533562,054

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202671
B0170021
C0313391
D0166261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64024486.997813%
B64033605.622365%
C6402222034.676664%
D64022774.326773%

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 7492 6403 261 261 3.48% 4.08%
B 7493 6404 161 161 2.15% 2.51%
C 7492 6403 1798 1798 24.00% 28.08%
D 7492 6403 216 216 2.88% 3.37%

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 932657 5662.29 669 651 164.6
A 4 175 538042 3264.85 669 651 164.6
A 15 174 288541 1749.04 669 651 164.6
B 6 51 611682 4278.51 675 654 142.8
B 5 172 456053 3188.77 675 654 142.8
B 5 185 86921 604.06 675 654 142.8
C 4 12 5549400 36064.19 552 547 153.9
C 15 179 300774 1951.29 552 547 153.9
C 12 250 203480 1318.94 552 547 153.9
D 8 176 546669 2901.49 664 638 188.2
D 6 42 404137 2144.11 664 638 188.2
D 15 108 98994 522.64 664 638 188.2

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