ASTROSAT CZTI

Data Quality Report

Orbit 38633

Creation date: 2024-06-27T21:54:23.800821
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/AS1A12_061T03_9000005390_38633cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38633cztM0_level2_quad_clean.evt
Size (bytes)378,679,680100,319,040
Size361.1 MB 95.7 MB
Events in quadrant A3,079,728676,939
Events in quadrant B2,912,423700,019
Events in quadrant C2,927,887667,851
Events in quadrant D4,654,735595,272

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126903
B0123112
C0120892
D0177672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5692290.509487%
B5692140.245959%
C5692220.386507%
D56922634.620520%

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 7484 5693 16 16 0.21% 0.28%
B 7484 5693 7 7 0.09% 0.12%
C 7484 5693 21 21 0.28% 0.37%
D 7484 5693 221 221 2.95% 3.88%

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 421517 3162.23 652 641 133.1
A 9 143 76245 568.05 652 641 133.1
A 13 248 18643 135.26 652 641 133.1
B 5 184 160294 1269.5 658 642 125.8
B 0 155 99343 784.84 658 642 125.8
B 0 183 16719 127.84 658 642 125.8
C 15 214 229415 1505.17 648 653 152.0
C 14 254 89097 581.93 648 653 152.0
C 15 159 36724 237.33 648 653 152.0
D 2 249 671392 4356.77 632 617 154.0
D 2 16 361589 2344.56 632 617 154.0
D 13 249 325997 2113.38 632 617 154.0

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