ASTROSAT CZTI

Data Quality Report

Orbit 31191

Creation date: 2024-06-27T20:24:46.399338
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/AS1A10_082T10_9000004512_31191cztM0_level2.evt modeM0/AS1A10_082T10_9000004512_31191cztM0_level2_quad_clean.evt
Size (bytes)159,840,00033,433,920
Size152.4 MB 31.9 MB
Events in quadrant A915,676230,329
Events in quadrant B1,463,509227,788
Events in quadrant C1,042,640213,874
Events in quadrant D1,305,236219,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037291
B053751
C040771
D051241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1638593.601954%
B16381187.203907%
C16371136.902871%
D1637452.748931%

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 2768 1639 0 0 0.00% 0.00%
B 2768 1639 23 23 0.83% 1.40%
C 2767 1637 22 22 0.80% 1.34%
D 2767 1638 5 5 0.18% 0.31%

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 8 160 4471 87.19 235 231 48.6
A 13 254 2739 51.57 235 231 48.6
A 11 47 2542 47.52 235 231 48.6
B 6 159 429717 9612.05 225 221 44.7
B 4 171 109884 2454.24 225 221 44.7
B 0 190 16242 358.55 225 221 44.7
C 0 10 149842 3000.49 213 214 49.9
C 14 238 38491 767.57 213 214 49.9
C 4 175 11782 231.97 213 214 49.9
D 8 195 442412 8230.55 222 217 53.7
D 12 79 18150 333.79 222 217 53.7
D 2 234 4501 79.74 222 217 53.7

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