ASTROSAT CZTI

Data Quality Report

Orbit 17757

Creation date: 2024-06-27T17:40:32.612803
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_070T07_9000002644_17757cztM0_level2.evt modeM0/AS1T03_070T07_9000002644_17757cztM0_level2_quad_clean.evt
Size (bytes)116,758,08029,332,800
Size111.3 MB 28.0 MB
Events in quadrant A717,776201,572
Events in quadrant B824,476201,617
Events in quadrant C912,685188,962
Events in quadrant D982,276190,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030091
B033751
C036101
D038861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141560.424028%
B1415241.696113%
C1415654.593640%
D1415362.544170%

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 1415 1415 0 0 0.00% 0.00%
B 1415 1415 15 15 1.06% 1.06%
C 1415 1415 27 27 1.91% 1.91%
D 1415 1415 22 22 1.55% 1.55%

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 1670 38.52 186 182 38.6
A 12 194 1481 33.63 186 182 38.6
A 3 137 1357 30.42 186 182 38.6
B 7 220 54646 1497.71 183 179 36.4
B 0 219 25754 703.25 183 179 36.4
B 0 229 6968 186.68 183 179 36.4
C 4 254 176913 4171.88 175 176 42.4
C 14 238 26910 631.06 175 176 42.4
C 5 218 10185 236.26 175 176 42.4
D 5 222 120824 2721.67 180 175 44.3
D 2 165 68661 1544.95 180 175 44.3
D 7 238 66202 1489.48 180 175 44.3

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