ASTROSAT CZTI

Data Quality Report

Orbit 42417

Creation date: 2024-06-27T22:40:01.196783
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/AS1T05_138T01_9000005802_42417cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42417cztM0_level2_quad_clean.evt
Size (bytes)196,364,16052,597,440
Size187.3 MB 50.2 MB
Events in quadrant A1,686,978359,491
Events in quadrant B1,393,521367,772
Events in quadrant C1,439,019352,968
Events in quadrant D2,521,959305,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067261
B060545
C060964
D094358

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2898170.586611%
B289530.103627%
C289690.310773%
D28972388.215395%

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 2898 2898 9 9 0.31% 0.31%
B 2898 2897 0 0 0.00% 0.00%
C 2898 2897 8 8 0.28% 0.28%
D 2898 2898 240 240 8.28% 8.28%

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 10 83 307971 4402.53 337 331 69.9
A 7 3 54324 772.67 337 331 69.9
A 13 6 11943 166.18 337 331 69.9
B 15 36 26613 414.17 330 323 63.5
B 0 245 25389 394.89 330 323 63.5
B 5 255 22362 347.2 330 323 63.5
C 15 214 121092 1606.15 321 324 75.2
C 3 110 42586 562.06 321 324 75.2
C 14 254 13687 177.72 321 324 75.2
D 12 33 377586 4879.63 318 310 77.3
D 2 16 367004 4742.76 318 310 77.3
D 12 233 230205 2973.43 318 310 77.3

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