ASTROSAT CZTI

Data Quality Report

Orbit 24768

Creation date: 2024-06-27T19:09:40.398237
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_147T01_9000003624_24768cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24768cztM0_level2_quad_clean.evt
Size (bytes)538,179,84091,825,920
Size513.2 MB 87.6 MB
Events in quadrant A3,577,097604,326
Events in quadrant B4,001,025607,277
Events in quadrant C3,598,312569,004
Events in quadrant D4,667,458532,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144692
B0158772
C0145422
D0178742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6705991.476510%
B67061652.460483%
C67061362.028035%
D67064887.277065%

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 7815 6706 0 0 0.00% 0.00%
B 7816 6707 17 17 0.22% 0.25%
C 7816 6707 0 0 0.00% 0.00%
D 7816 6707 453 453 5.80% 6.75%

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 4 2 29948 158.81 918 902 182.9
A 12 96 10812 54.18 918 902 182.9
A 13 254 9115 44.91 918 902 182.9
B 3 64 435874 2529.41 899 878 172.0
B 10 246 21449 119.62 899 878 172.0
B 12 111 20864 116.21 899 878 172.0
C 14 238 138864 689.93 863 872 200.0
C 7 247 67561 333.43 863 872 200.0
C 3 233 16868 79.98 863 872 200.0
D 12 233 1136448 5480.33 858 835 207.2
D 8 195 225370 1083.58 858 835 207.2
D 1 52 70579 336.58 858 835 207.2

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