ASTROSAT CZTI

Data Quality Report

Orbit 09677

Creation date: 2024-06-27T15:49:16.586672
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/AS1A02_198T01_9000001376_09677cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09677cztM0_level2_quad_clean.evt
Size (bytes)1,277,559,360237,752,640
Size1.2 GB 226.7 MB
Events in quadrant A9,173,4021,513,159
Events in quadrant B8,542,0421,515,886
Events in quadrant C7,838,2401,503,806
Events in quadrant D11,916,9511,423,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389644
B0377495
C0363373
D0480593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18047840.465451%
B18046600.332484%
C18047110.060952%
D1804710255.679614%

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 20167 18050 37 37 0.18% 0.20%
B 20167 18050 7 7 0.03% 0.04%
C 20167 18050 0 0 0.00% 0.00%
D 20167 18050 1159 1159 5.75% 6.42%

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 15 646817 1541.82 2065 2025 418.2
A 1 162 204910 485.14 2065 2025 418.2
A 15 174 133446 314.25 2065 2025 418.2
B 0 214 184638 464.63 2071 2024 393.0
B 10 245 83275 206.73 2071 2024 393.0
B 0 219 75010 185.7 2071 2024 393.0
C 8 128 16662 31.6 1999 2010 463.7
C 13 61 15059 28.14 1999 2010 463.7
C 8 112 9764 16.72 1999 2010 463.7
D 1 52 2956803 6047.06 1961 1907 488.7
D 8 195 539743 1100.66 1961 1907 488.7
D 7 71 424220 864.24 1961 1907 488.7

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