ASTROSAT CZTI

Data Quality Report

Orbit 25122

Creation date: 2024-06-27T19:14:05.183172
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/AS1C05_012T06_9000003674_25122cztM0_level2.evt modeM0/AS1C05_012T06_9000003674_25122cztM0_level2_quad_clean.evt
Size (bytes)1,924,940,160244,771,200
Size1.8 GB 233.4 MB
Events in quadrant A8,219,0741,639,082
Events in quadrant B8,511,4141,668,038
Events in quadrant C11,401,0391,571,123
Events in quadrant D28,948,3181,285,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365300
B0370180
C0469990
D0985420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181051630.900304%
B181062001.104606%
C181053171.750898%
D18105571531.565866%

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 20000 18106 0 0 0.00% 0.00%
B 20001 18106 18 18 0.09% 0.10%
C 20000 18106 2 2 0.01% 0.01%
D 20000 18105 5468 5468 27.34% 30.20%

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 13 254 28340 61.43 2128 2076 427.5
A 3 137 19916 41.73 2128 2076 427.5
A 0 226 18265 37.87 2128 2076 427.5
B 3 64 112377 276.22 2123 2071 399.3
B 0 190 51305 123.29 2123 2071 399.3
B 12 111 50210 120.55 2123 2071 399.3
C 7 247 3021423 6371.57 2035 2046 473.9
C 14 238 324742 680.96 2035 2046 473.9
C 7 87 46141 93.05 2035 2046 473.9
D 12 235 11054443 25051.82 1818 1764 441.2
D 8 195 5732933 12990.17 1818 1764 441.2
D 12 33 3104912 7033.55 1818 1764 441.2

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