ASTROSAT CZTI

Data Quality Report

Orbit 29806

Creation date: 2024-06-27T20:07:55.842370
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/AS1T03_291T01_9000004278_29806cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29806cztM0_level2_quad_clean.evt
Size (bytes)892,984,32097,418,880
Size851.6 MB 92.9 MB
Events in quadrant A3,289,348711,039
Events in quadrant B9,522,061649,674
Events in quadrant C3,424,175667,776
Events in quadrant D10,364,630460,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138082
B0328222
C0141013
D0353432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6588440.667881%
B6588195429.659988%
C6587971.472598%
D6587274341.642629%

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 7653 6589 0 0 0.00% 0.00%
B 7653 6589 1183 1183 15.46% 17.95%
C 7652 6588 19 19 0.25% 0.29%
D 7652 6588 2653 2653 34.67% 40.27%

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 13 254 13284 73.77 853 839 168.7
A 3 137 7985 42.36 853 839 168.7
A 0 226 7293 38.26 853 839 168.7
B 0 189 4355878 29601.49 784 767 147.1
B 6 159 1875204 12740.46 784 767 147.1
B 15 33 77762 523.33 784 767 147.1
C 14 238 136779 723.42 808 815 187.9
C 10 22 101846 537.55 808 815 187.9
C 3 233 20352 103.95 808 815 187.9
D 7 238 7156085 46204.09 654 638 154.9
D 8 195 453137 2921.87 654 638 154.9
D 13 138 73260 468.93 654 638 154.9

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