ASTROSAT CZTI

Data Quality Report

Orbit 39803

Creation date: 2024-06-27T22:09:08.455244
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/AS1A12_022T01_9000005498_39803cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39803cztM0_level2_quad_clean.evt
Size (bytes)1,941,065,280303,926,400
Size1.8 GB 289.8 MB
Events in quadrant A11,900,3002,245,976
Events in quadrant B11,042,8832,282,010
Events in quadrant C35,349,4441,316,752
Events in quadrant D11,951,1361,922,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0553316358
B0540366309
C013203312766
D0572376204

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07117
B07219
C07825
D06916

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048561
B048161
C047854
D047548

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208723341.600230%
B208483961.899463%
C20697888542.928927%
D208256553.145258%

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 28881 21110 309 309 1.07% 1.46%
B 28892 21075 223 223 0.77% 1.06%
C 28882 20883 8049 8049 27.87% 38.54%
D 28900 21072 470 470 1.63% 2.23%

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 10 83 1475935 3278.02 2224 2182 449.6
A 9 143 1435615 3188.34 2224 2182 449.6
A 13 248 152602 334.57 2224 2182 449.6
B 5 255 992078 2370.74 2199 2136 417.6
B 5 172 624478 1490.4 2199 2136 417.6
B 4 171 488442 1164.62 2199 2136 417.6
C 9 187 22559660 55132.83 1768 1777 409.2
C 15 208 5069563 12385.98 1768 1777 409.2
C 15 214 711535 1734.69 1768 1777 409.2
D 12 227 991651 1889.24 2138 2074 523.8
D 2 249 838718 1597.27 2138 2074 523.8
D 13 249 748380 1424.8 2138 2074 523.8

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