ASTROSAT CZTI

Data Quality Report

Orbit 33272

Creation date: 2024-06-27T20:46:53.316530
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/AS1A11_047T10_9000004778_33272cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33272cztM0_level2_quad_clean.evt
Size (bytes)986,503,680152,084,160
Size940.8 MB 145.0 MB
Events in quadrant A5,181,274980,311
Events in quadrant B7,694,489958,499
Events in quadrant C5,927,910965,192
Events in quadrant D10,301,644911,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231804
B0309743
C0246993
D0386693

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11425180.157549%
B114257186.284464%
C11425420.367615%
D114257326.407002%

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 15574 11428 0 0 0.00% 0.00%
B 15574 11428 403 403 2.59% 3.53%
C 15574 11428 28 28 0.18% 0.25%
D 15574 11428 568 568 3.65% 4.97%

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 6 28911 104.31 1327 1296 264.7
A 13 254 19534 68.89 1327 1296 264.7
A 15 169 13948 47.79 1327 1296 264.7
B 5 172 1937545 7859.81 1289 1256 246.4
B 5 200 213466 861.41 1289 1256 246.4
B 0 219 120249 483.02 1289 1256 246.4
C 15 214 504589 1723.37 1275 1288 292.0
C 0 10 138434 469.61 1275 1288 292.0
C 15 208 127956 433.73 1275 1288 292.0
D 8 195 2408999 7080.28 1245 1222 340.1
D 2 249 1265854 3718.76 1245 1222 340.1
D 12 6 400324 1173.59 1245 1222 340.1

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