ASTROSAT CZTI

Data Quality Report

Orbit 09040

Creation date: 2024-06-27T15:40:23.142917
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/AS1G07_029T02_9000001256_09040cztM0_level2.evt modeM0/AS1G07_029T02_9000001256_09040cztM0_level2_quad_clean.evt
Size (bytes)1,221,848,640194,932,800
Size1.1 GB 185.9 MB
Events in quadrant A11,359,4221,192,409
Events in quadrant B8,631,0291,214,334
Events in quadrant C7,142,8541,201,884
Events in quadrant D8,759,3911,160,838

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03322
B03320
C03320
D03322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045160290
B036892169
C033490159
D037787164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164403942.396594%
B164532391.452623%
C16453460.279584%
D164562201.336898%

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 17677 16527 244 244 1.38% 1.48%
B 17677 16529 134 134 0.76% 0.81%
C 17677 16533 4 4 0.02% 0.02%
D 17677 16532 182 182 1.03% 1.10%

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 8 5 3520268 9354.01 1864 1826 376.1
A 5 16 275929 728.72 1864 1826 376.1
A 1 162 144374 378.97 1864 1826 376.1
B 4 48 511573 1419.29 1881 1832 359.2
B 10 16 341607 946.05 1881 1832 359.2
B 0 230 140688 386.62 1881 1832 359.2
C 14 234 30402 67.18 1824 1828 425.3
C 13 61 13836 28.23 1824 1828 425.3
C 3 202 4586 6.48 1824 1828 425.3
D 6 225 1012532 2175.14 1806 1766 464.7
D 2 14 215605 460.17 1806 1766 464.7
D 1 52 188100 400.98 1806 1766 464.7

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