ASTROSAT CZTI

Data Quality Report

Orbit 37167

Creation date: 2024-06-27T21:36:25.927041
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/AS1A11_079T01_9000005284_37167cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37167cztM0_level2_quad_clean.evt
Size (bytes)1,233,095,040177,068,160
Size1.1 GB 168.9 MB
Events in quadrant A8,119,9061,091,774
Events in quadrant B9,997,6301,080,431
Events in quadrant C8,718,7991,087,791
Events in quadrant D9,431,1721,002,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343655
B0405044
C0356654
D0394614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15950680.426332%
B159504072.551724%
C159501841.153605%
D159507214.520376%

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 21471 15954 33 33 0.15% 0.21%
B 21471 15954 245 245 1.14% 1.54%
C 21471 15954 150 150 0.70% 0.94%
D 21471 15954 532 532 2.48% 3.33%

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 637294 1721.77 1827 1790 369.1
A 7 16 129998 347.35 1827 1790 369.1
A 9 143 128727 343.91 1827 1790 369.1
B 4 251 1015428 2959.17 1792 1745 342.6
B 5 172 851390 2480.31 1792 1745 342.6
B 0 190 363911 1057.25 1792 1745 342.6
C 15 214 669772 1611.26 1774 1783 414.6
C 0 10 587099 1411.84 1774 1783 414.6
C 14 254 434094 1042.78 1774 1783 414.6
D 2 249 1656913 3931.43 1739 1697 421.0
D 13 249 411344 972.98 1739 1697 421.0
D 13 171 153117 359.65 1739 1697 421.0

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