ASTROSAT CZTI

Data Quality Report

Orbit 18870

Creation date: 2024-06-27T17:55:53.919292
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/AS1T03_094T01_9000002816_18870cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18870cztM0_level2_quad_clean.evt
Size (bytes)547,574,40099,679,680
Size522.2 MB 95.1 MB
Events in quadrant A4,450,890641,035
Events in quadrant B3,488,014676,650
Events in quadrant C3,815,460634,623
Events in quadrant D4,387,145611,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174272
B0148192
C0154882
D0174672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65183094.740718%
B65191251.917472%
C65192363.620187%
D65191592.439024%

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 7608 6519 316 316 4.15% 4.85%
B 7609 6520 35 35 0.46% 0.54%
C 7609 6520 154 154 2.02% 2.36%
D 7609 6520 103 103 1.35% 1.58%

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 6 16 1355159 8419.79 794 780 160.9
A 9 143 15654 92.47 794 780 160.9
A 15 174 14979 88.27 794 780 160.9
B 7 220 256615 1662.63 804 784 153.9
B 4 216 39518 251.73 804 784 153.9
B 12 111 17996 111.86 804 784 153.9
C 3 233 705650 3897.52 766 773 180.9
C 14 238 119581 656.93 766 773 180.9
C 13 61 5408 25.63 766 773 180.9
D 1 52 546501 2890.59 768 742 188.8
D 12 1 451341 2386.57 768 742 188.8
D 14 34 141642 746.27 768 742 188.8

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