ASTROSAT CZTI

Data Quality Report

Orbit 35271

Creation date: 2024-06-27T21:11:22.061749
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_082T01_9000005056_35271cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35271cztM0_level2_quad_clean.evt
Size (bytes)1,136,200,320149,454,720
Size1.1 GB 142.5 MB
Events in quadrant A5,538,112971,594
Events in quadrant B11,924,129903,375
Events in quadrant C6,473,885947,988
Events in quadrant D9,684,669893,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239554
B0433923
C0261233
D0367203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11703180.153807%
B11703192316.431684%
C117031551.324447%
D117039908.459369%

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 16182 11706 0 0 0.00% 0.00%
B 16182 11705 1315 1315 8.13% 11.23%
C 16182 11706 110 110 0.68% 0.94%
D 16182 11706 791 791 4.89% 6.76%

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 10 83 168696 602.7 1381 1354 277.7
A 13 254 20177 67.79 1381 1354 277.7
A 13 6 19131 64.03 1381 1354 277.7
B 5 236 4762693 19576.99 1284 1251 243.2
B 5 172 1920901 7892.77 1284 1251 243.2
B 0 189 81092 328.27 1284 1251 243.2
C 0 10 575614 1840.78 1344 1354 312.0
C 15 214 484296 1548.06 1344 1354 312.0
C 9 187 48021 149.59 1344 1354 312.0
D 2 249 2648034 8304.21 1315 1280 318.7
D 13 249 681097 2132.93 1315 1280 318.7
D 8 195 456358 1427.81 1315 1280 318.7

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