ASTROSAT CZTI

Data Quality Report

Orbit 25753

Creation date: 2024-06-27T19:21:06.695762
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/AS1A09_033T01_9000003750_25753cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25753cztM0_level2_quad_clean.evt
Size (bytes)1,105,375,680233,879,040
Size1.0 GB 223.0 MB
Events in quadrant A7,553,9271,509,067
Events in quadrant B7,738,0621,559,629
Events in quadrant C8,020,0031,498,806
Events in quadrant D9,139,2081,470,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316510
B0322350
C0330130
D0368150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405
B0382
C0382
D0383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15065550.365085%
B150771180.782649%
C151051851.224760%
D150711931.280605%

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 20382 15246 0 0 0.00% 0.00%
B 20382 15257 0 0 0.00% 0.00%
C 20382 15275 7 7 0.03% 0.05%
D 20382 15237 172 172 0.84% 1.13%

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 20479 48.01 1961 1924 386.5
A 3 137 17157 39.41 1961 1924 386.5
A 0 226 16527 37.78 1961 1924 386.5
B 12 111 43315 113.85 1960 1914 363.6
B 11 111 39714 103.95 1960 1914 363.6
B 14 111 36317 94.61 1960 1914 363.6
C 14 238 308232 692.65 1920 1939 442.2
C 3 233 202847 454.34 1920 1939 442.2
C 2 16 14965 29.46 1920 1939 442.2
D 7 80 1072500 2323.45 1928 1890 460.8
D 13 104 274168 590.9 1928 1890 460.8
D 1 52 230450 496.02 1928 1890 460.8

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