ASTROSAT CZTI

Data Quality Report

Orbit 25389

Creation date: 2024-06-27T19:17:07.521682
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_057T04_9000003712_25389cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25389cztM0_level2_quad_clean.evt
Size (bytes)726,696,00075,337,920
Size693.0 MB 71.8 MB
Events in quadrant A4,339,920520,696
Events in quadrant B3,205,628529,215
Events in quadrant C3,129,600493,025
Events in quadrant D10,942,113333,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172490
B0127900
C0125850
D0365530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57781572.717203%
B57791182.041876%
C57791342.318740%
D5779350360.616024%

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 7093 5778 27 27 0.38% 0.47%
B 7094 5780 0 0 0.00% 0.00%
C 7094 5780 0 0 0.00% 0.00%
D 7093 5778 3213 3213 45.30% 55.61%

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 6 16 1163346 7216.84 818 804 161.1
A 15 173 20039 119.41 818 804 161.1
A 13 254 7668 42.61 818 804 161.1
B 0 190 28468 185.62 799 782 149.2
B 4 80 18310 117.52 799 782 149.2
B 12 111 17206 110.11 799 782 149.2
C 14 238 124927 707.17 765 771 175.6
C 5 112 11561 61.46 765 771 175.6
C 3 233 6283 31.4 765 771 175.6
D 1 52 7283211 52824.6 574 560 137.9
D 7 238 1022187 7410.36 574 560 137.9
D 8 195 283269 2050.63 574 560 137.9

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