ASTROSAT CZTI

Data Quality Report

Orbit 22855

Creation date: 2024-06-27T18:45:15.750737
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/AS1A08_007T01_9000003362_22855cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22855cztM0_level2_quad_clean.evt
Size (bytes)10,324,8003,542,400
Size9.8 MB 3.4 MB
Events in quadrant A77,64523,460
Events in quadrant B71,41122,227
Events in quadrant C71,63521,723
Events in quadrant D77,91920,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075
B084
C086
D084

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0731411
B0744448
C0724414
D0863538

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16010.625000%
B14700.000000%
C15400.000000%
D14600.000000%

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 268 199 0 0 0.00% 0.00%
B 259 180 0 0 0.00% 0.00%
C 280 195 0 0 0.00% 0.00%
D 264 178 0 0 0.00% 0.00%

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 13 252 360 57.32 19 19 5.9
A 13 254 249 38.66 19 19 5.9
A 3 137 178 26.73 19 19 5.9
B 4 173 1042 189.07 17 17 5.4
B 14 111 354 62.16 17 17 5.4
B 12 111 351 61.61 17 17 5.4
C 14 238 2751 466.11 17 17 5.9
C 13 61 159 24.21 17 17 5.9
C 0 239 136 20.29 17 17 5.9
D 7 238 10962 1838.37 17 16 6.0
D 13 153 2644 441.37 17 16 6.0
D 2 234 610 99.76 17 16 6.0

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