ASTROSAT CZTI

Data Quality Report

Orbit 20230519_A12_025T14_9000005646_level2

Creation date: 2023-05-20T13:53:20.072629
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/AS1A12_025T14_9000005646cztM0_level2.fits modeM0/AS1A12_025T14_9000005646cztM0_level2_quad_clean.evt
Size (bytes)252,541,440192,476,160
Size240.8 MB 183.6 MB
Events in quadrant A1,542,6661,042,828
Events in quadrant B1,481,9281,052,477
Events in quadrant C1,458,998980,873
Events in quadrant D1,282,528869,706

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589140
B0619210
C0624130
D0679630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27373420.153436%
B273731770.646623%
C273738623.149089%
D273738273.021225%

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 38789 27373 0 0 0.00% 0.00%
B 38789 27372 0 0 0.00% 0.00%
C 38789 27202 0 0 0.00% 0.00%
D 38789 27349 0 0 0.00% 0.00%

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 9 19 1283 8.85 402 377 102.4
A 0 29 1273 8.75 402 377 102.4
A 7 110 1271 8.73 402 377 102.4
B 2 9 1272 11.26 391 372 79.9
B 3 80 1039 8.35 391 372 79.9
B 3 17 1015 8.05 391 372 79.9
C 1 81 1162 7.78 386 361 102.9
C 1 80 1117 7.34 386 361 102.9
C 9 233 1001 6.22 386 361 102.9
D 7 3 990 6.55 367 334 100.1
D 10 189 912 5.78 367 334 100.1
D 6 62 908 5.74 367 334 100.1

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