ASTROSAT CZTI

Data Quality Report

Orbit 33239

Creation date: 2024-06-27T20:46:28.811205
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_067T01_9000004774_33239cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33239cztM0_level2_quad_clean.evt
Size (bytes)713,698,56071,375,040
Size680.6 MB 68.1 MB
Events in quadrant A2,589,784516,555
Events in quadrant B3,904,293495,929
Events in quadrant C3,069,151503,327
Events in quadrant D11,674,249254,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112333
B0153232
C0126402
D0385402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557740.071723%
B55772945.271651%
C55771081.936525%
D5577366865.770127%

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 7040 5578 0 0 0.00% 0.00%
B 7040 5578 193 193 2.74% 3.46%
C 7040 5578 89 89 1.26% 1.60%
D 7039 5577 3194 3194 45.38% 57.27%

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 13 6 9443 65.97 665 652 133.3
A 13 254 9275 64.71 665 652 133.3
A 3 137 6274 42.19 665 652 133.3
B 5 172 732879 5909.81 644 629 123.9
B 5 200 209426 1685.15 644 629 123.9
B 4 170 133510 1072.45 644 629 123.9
C 0 10 273895 1846.98 639 645 147.9
C 1 23 188483 1269.65 639 645 147.9
C 14 254 38877 258.42 639 645 147.9
D 12 3 6564242 55207.99 423 415 118.9
D 8 195 1492933 12553.49 423 415 118.9
D 7 80 1199743 10087.48 423 415 118.9

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