ASTROSAT CZTI

Data Quality Report

Orbit 36217

Creation date: 2024-06-27T21:23:50.181441
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_080T02_9000005176_36217cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36217cztM0_level2_quad_clean.evt
Size (bytes)499,006,08065,191,680
Size475.9 MB 62.2 MB
Events in quadrant A2,888,416416,575
Events in quadrant B3,314,767423,617
Events in quadrant C3,262,698412,017
Events in quadrant D5,311,405374,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116833
B0130092
C0127742
D0192262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954190.383528%
B49541352.725071%
C49541272.563585%
D495456211.344368%

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 7017 4955 10 10 0.14% 0.20%
B 7017 4954 92 92 1.31% 1.86%
C 7017 4955 117 117 1.67% 2.36%
D 7017 4955 631 631 8.99% 12.73%

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 15 223 309599 2556.03 602 591 120.9
A 10 83 173932 1433.83 602 591 120.9
A 9 143 45196 368.96 602 591 120.9
B 5 236 287670 2515.49 603 587 114.1
B 5 172 218033 1905.31 603 587 114.1
B 0 213 174210 1521.32 603 587 114.1
C 0 10 599324 4359.06 589 594 137.4
C 15 214 206389 1498.29 589 594 137.4
C 1 23 143171 1038.03 589 594 137.4
D 12 227 1521484 11149.65 562 547 136.4
D 12 6 550824 4033.96 562 547 136.4
D 12 235 487191 3567.48 562 547 136.4

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