ASTROSAT CZTI

Data Quality Report

Orbit 36618

Creation date: 2024-06-27T21:29:14.854807
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_073T02_9000005226_36618cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36618cztM0_level2_quad_clean.evt
Size (bytes)535,213,44067,014,720
Size510.4 MB 63.9 MB
Events in quadrant A2,705,073429,110
Events in quadrant B3,914,157424,654
Events in quadrant C3,148,713414,934
Events in quadrant D6,068,436375,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115023
B0153052
C0126672
D0218842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A550290.163577%
B55022384.325700%
C55021382.508179%
D550259610.832425%

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 8668 5504 1 1 0.01% 0.02%
B 8668 5504 154 154 1.78% 2.80%
C 8668 5504 98 98 1.13% 1.78%
D 8668 5504 520 520 6.00% 9.45%

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 205164 1603.0 634 622 127.6
A 13 6 21866 166.49 634 622 127.6
A 15 223 13914 104.17 634 622 127.6
B 5 200 1166231 9727.06 625 609 119.8
B 5 255 106523 883.85 625 609 119.8
B 0 219 44538 366.59 625 609 119.8
C 0 10 389053 2717.49 612 617 142.9
C 15 214 233750 1630.99 612 617 142.9
C 12 249 82982 576.22 612 617 142.9
D 12 235 3325195 22767.89 594 578 146.0
D 2 153 126086 859.51 594 578 146.0
D 2 249 74452 505.91 594 578 146.0

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