ASTROSAT CZTI

Data Quality Report

Orbit 39701

Creation date: 2024-06-27T22:07:55.403297
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_011T22_9000005492_39701cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39701cztM0_level2_quad_clean.evt
Size (bytes)1,599,312,960244,143,360
Size1.5 GB 232.8 MB
Events in quadrant A23,775,8391,430,954
Events in quadrant B10,215,0751,695,525
Events in quadrant C13,573,2941,634,042
Events in quadrant D10,401,1421,523,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0819355
B0417184
C0511994
D0424124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16042392624.473258%
B160428835.504301%
C160429015.616507%
D160426674.157836%

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 21470 16046 3442 3442 16.03% 21.45%
B 21470 16045 533 533 2.48% 3.32%
C 21470 16046 788 788 3.67% 4.91%
D 21470 16046 554 554 2.58% 3.45%

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 15 222 13779662 41294.24 1639 1608 333.7
A 15 174 2046434 6128.55 1639 1608 333.7
A 10 83 1080378 3233.18 1639 1608 333.7
B 10 246 2714348 8193.64 1736 1686 331.1
B 0 190 292066 877.1 1736 1686 331.1
B 5 172 274732 824.74 1736 1686 331.1
C 9 187 3420765 8676.32 1688 1697 394.1
C 15 208 2142152 5431.68 1688 1697 394.1
C 14 254 753265 1907.2 1688 1697 394.1
D 12 227 2462191 5995.13 1700 1651 410.4
D 12 233 485699 1179.39 1700 1651 410.4
D 13 249 405633 984.31 1700 1651 410.4

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