ASTROSAT CZTI

Data Quality Report

Orbit 24923

Creation date: 2024-06-27T19:11:29.680554
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/AS1T03_205T01_9000003652_24923cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24923cztM0_level2_quad_clean.evt
Size (bytes)484,744,320137,574,720
Size462.3 MB 131.2 MB
Events in quadrant A3,203,475950,949
Events in quadrant B3,318,794970,535
Events in quadrant C3,252,045914,916
Events in quadrant D4,469,444881,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136182
B0139572
C0136592
D0174882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429360.559963%
B6429711.104371%
C6429691.073262%
D64292513.904184%

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 8769 6431 0 0 0.00% 0.00%
B 8769 6431 0 0 0.00% 0.00%
C 8769 6431 1 1 0.01% 0.02%
D 8769 6431 197 197 2.25% 3.06%

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 10692 60.01 830 815 164.6
A 3 137 7355 39.73 830 815 164.6
A 0 226 7143 38.45 830 815 164.6
B 15 33 28914 185.33 828 809 151.6
B 12 111 18135 114.25 828 809 151.6
B 11 111 16533 103.69 828 809 151.6
C 14 238 131210 718.5 794 799 181.5
C 2 16 11752 60.35 794 799 181.5
C 0 10 8402 41.89 794 799 181.5
D 1 52 1283698 6807.29 792 771 188.5
D 8 195 88287 464.37 792 771 188.5
D 2 244 52606 275.04 792 771 188.5

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