ASTROSAT CZTI

Data Quality Report

Orbit 20250428_C09_011T05_9000006466_level2

Creation date: 2025-05-08T23:38:23.835852
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/AS1C09_011T05_9000006466cztM0_level2.fits modeM0/AS1C09_011T05_9000006466cztM0_level2_quad_clean.evt
Size (bytes)4,793,820,4802,155,498,560
Size4.5 GB 2.0 GB
Events in quadrant A32,413,0148,944,207
Events in quadrant B26,164,5488,088,163
Events in quadrant C30,740,6388,554,550
Events in quadrant D20,273,7284,265,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105930
B0105940
C0105940
D0107420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018545210
B017543570
C017217390
D029514700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06000
B06020
C06000
D06020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231315907111.291818%
B5235246794612.978584%
C5238146491412.392567%
D52273824509346.886394%

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 607160 523197 0 0 0.00% 0.00%
B 607160 494805 0 0 0.00% 0.00%
C 607161 524356 0 0 0.00% 0.00%
D 607160 504966 0 0 0.00% 0.00%

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 14 188 29051 9.07 8680 8224 2295.9
A 9 255 26866 8.12 8680 8224 2295.9
A 14 204 24031 6.88 8680 8224 2295.9
B 2 9 25756 12.76 7036 6743 1489.8
B 2 8 23030 10.93 7036 6743 1489.8
B 9 173 18147 7.65 7036 6743 1489.8
C 2 31 21346 5.51 8392 7903 2440.3
C 3 203 20461 5.15 8392 7903 2440.3
C 15 127 20365 5.11 8392 7903 2440.3
D 6 218 20878 8.99 5931 5374 1724.9
D 15 11 16722 6.58 5931 5374 1724.9
D 3 30 15893 6.1 5931 5374 1724.9

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