ASTROSAT CZTI

Data Quality Report

Orbit 20797

Creation date: 2024-06-27T18:19:41.309913
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_013T01_9000003070_20797cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20797cztM0_level2_quad_clean.evt
Size (bytes)561,093,12082,010,880
Size535.1 MB 78.2 MB
Events in quadrant A3,277,082528,825
Events in quadrant B3,666,713522,325
Events in quadrant C3,386,230512,176
Events in quadrant D6,221,348465,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137392
B0149373
C0141472
D0230202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6510380.583717%
B65091392.135505%
C65091051.613151%
D65096279.632816%

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 7680 6510 0 0 0.00% 0.00%
B 7679 6509 57 57 0.74% 0.88%
C 7679 6509 0 0 0.00% 0.00%
D 7679 6509 597 597 7.77% 9.17%

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 0 226 7411 39.0 853 837 168.6
A 3 137 6360 32.76 853 837 168.6
A 12 194 6067 31.02 853 837 168.6
B 7 220 174123 1097.23 843 822 157.9
B 3 64 66239 414.18 843 822 157.9
B 0 182 47358 294.63 843 822 157.9
C 14 238 130666 694.91 822 829 186.8
C 7 247 49040 258.03 822 829 186.8
C 13 61 5764 26.41 822 829 186.8
D 1 52 2115445 11078.55 798 779 190.9
D 12 227 430078 2249.06 798 779 190.9
D 1 20 179410 935.83 798 779 190.9

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