ASTROSAT CZTI

Data Quality Report

Orbit 35817

Creation date: 2024-06-27T21:18:33.959236
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/AS1A09_146T01_9000005142_35817cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35817cztM0_level2_quad_clean.evt
Size (bytes)513,538,56074,024,640
Size489.7 MB 70.6 MB
Events in quadrant A3,254,066477,727
Events in quadrant B3,187,628480,437
Events in quadrant C3,164,292466,241
Events in quadrant D5,550,262408,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134493
B0134042
C0130702
D0204952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5852921.572112%
B5852440.751880%
C58521412.409433%
D585281713.961039%

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 7165 5854 76 76 1.06% 1.30%
B 7165 5854 13 13 0.18% 0.22%
C 7165 5854 133 133 1.86% 2.27%
D 7165 5853 770 770 10.75% 13.16%

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 15 169 516878 3850.39 661 646 134.1
A 10 83 160331 1191.03 661 646 134.1
A 13 254 8755 60.48 661 646 134.1
B 0 213 258016 2030.73 660 641 126.7
B 5 172 171985 1351.93 660 641 126.7
B 4 232 51549 401.67 660 641 126.7
C 0 10 348565 2326.09 643 649 149.6
C 15 214 244040 1627.26 643 649 149.6
C 0 207 50559 333.69 643 649 149.6
D 2 250 1948442 12911.94 610 592 150.9
D 7 223 340616 2253.96 610 592 150.9
D 13 249 216715 1432.64 610 592 150.9

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