ASTROSAT CZTI

Data Quality Report

Orbit 20355

Creation date: 2024-06-27T18:14:19.891352
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/AS1A05_163T01_9000003010_20355cztM0_level2.evt modeM0/AS1A05_163T01_9000003010_20355cztM0_level2_quad_clean.evt
Size (bytes)494,288,64080,392,320
Size471.4 MB 76.7 MB
Events in quadrant A3,525,937484,983
Events in quadrant B3,580,686491,428
Events in quadrant C3,560,708474,261
Events in quadrant D3,801,385470,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152893
B0153072
C0153042
D0163422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73711912.591236%
B73722162.930005%
C73721872.536625%
D73721602.170374%

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 8336 7373 0 0 0.00% 0.00%
B 8337 7374 0 0 0.00% 0.00%
C 8337 7374 0 0 0.00% 0.00%
D 8337 7374 30 30 0.36% 0.41%

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 3 137 8134 38.98 915 894 185.7
A 0 226 7903 37.73 915 894 185.7
A 13 254 7685 36.56 915 894 185.7
B 12 111 22735 122.38 908 882 178.6
B 11 111 20242 108.42 908 882 178.6
B 14 111 18543 98.91 908 882 178.6
C 14 238 134045 642.07 876 880 207.4
C 7 220 7517 32.0 876 880 207.4
C 3 233 6634 27.74 876 880 207.4
D 1 52 210076 952.28 893 865 219.7
D 7 238 104593 472.14 893 865 219.7
D 11 176 99486 448.9 893 865 219.7

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