ASTROSAT CZTI

Data Quality Report

Orbit 38364

Creation date: 2024-06-27T21:51:43.044603
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_094T24_9000005374_38364cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38364cztM0_level2_quad_clean.evt
Size (bytes)455,791,68087,946,560
Size434.7 MB 83.9 MB
Events in quadrant A2,816,842605,194
Events in quadrant B2,811,953616,433
Events in quadrant C2,717,460583,832
Events in quadrant D8,112,256484,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117503
B0120782
C0114992
D0280072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5331320.600263%
B5331701.313074%
C5331661.238042%
D533173213.731007%

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 6973 5332 14 14 0.20% 0.26%
B 6973 5332 36 36 0.52% 0.68%
C 6973 5332 48 48 0.69% 0.90%
D 6973 5332 794 794 11.39% 14.89%

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 404014 3365.48 583 569 119.9
A 9 143 80157 663.91 583 569 119.9
A 12 189 42972 353.72 583 569 119.9
B 0 183 163122 1463.14 584 567 111.1
B 15 35 96531 863.76 584 567 111.1
B 0 186 50079 445.65 584 567 111.1
C 15 214 224779 1687.94 571 573 132.8
C 0 207 181926 1365.32 571 573 132.8
C 14 254 37135 275.26 571 573 132.8
D 10 203 5539126 41210.93 548 533 134.4
D 12 227 142007 1052.66 548 533 134.4
D 13 138 61015 450.03 548 533 134.4

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