ASTROSAT CZTI

Data Quality Report

Orbit 01246

Creation date: 2024-06-27T14:09:46.507996
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/AS1G04_011T02_9000000226_01246cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01246cztM0_level2_quad_clean.evt
Size (bytes)944,712,00067,844,160
Size900.9 MB 64.7 MB
Events in quadrant A5,497,742465,091
Events in quadrant B9,893,206372,032
Events in quadrant C5,515,384461,751
Events in quadrant D7,401,587432,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010816
B010913
C011321
D011115

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148
B0127
C0105
D0105

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229993442
B0383625514
C0234603898
D0288253570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4575170.371585%
B4556157234.503951%
C4567250.547405%
D45793958.626338%

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 5812 4631 167 167 2.87% 3.61%
B 5805 4600 2367 2367 40.78% 51.46%
C 5798 4627 162 162 2.79% 3.50%
D 6279 4632 1124 1124 17.90% 24.27%

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 3 80 21968 60.75 1420 1428 338.1
A 8 14 12700 33.34 1420 1428 338.1
A 12 243 9571 24.09 1420 1428 338.1
B 2 32 4642999 16242.43 1224 1231 285.8
B 8 4 282223 983.24 1224 1231 285.8
B 5 191 225483 784.7 1224 1231 285.8
C 15 241 237897 648.89 1314 1359 364.5
C 9 52 75340 202.95 1314 1359 364.5
C 3 79 23904 61.85 1314 1359 364.5
D 10 84 2371379 6012.89 1273 1318 394.2
D 1 239 197379 497.41 1273 1318 394.2
D 13 252 37567 91.96 1273 1318 394.2

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