ASTROSAT CZTI

Data Quality Report

Orbit 39566

Creation date: 2024-06-27T22:06:14.018183
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_018T01_9000005488_39566cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39566cztM0_level2_quad_clean.evt
Size (bytes)584,441,28083,269,440
Size557.4 MB 79.4 MB
Events in quadrant A3,750,025605,026
Events in quadrant B2,439,699625,988
Events in quadrant C5,593,965555,208
Events in quadrant D9,415,511342,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150433
B0115742
C0204682
D0318722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5607881.569467%
B5607250.445871%
C560756710.112360%
D5607244343.570537%

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 7250 5608 62 62 0.86% 1.11%
B 7250 5608 10 10 0.14% 0.18%
C 7250 5608 584 584 8.06% 10.41%
D 7250 5608 2316 2316 31.94% 41.30%

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 15 222 993319 8414.69 582 570 118.0
A 10 83 437715 3705.31 582 570 118.0
A 6 10 33640 280.31 582 570 118.0
B 5 255 121882 1072.87 582 565 113.1
B 0 230 18918 162.31 582 565 113.1
B 12 111 14299 121.46 582 565 113.1
C 15 208 2654321 20663.57 551 554 128.4
C 9 187 540377 4203.33 551 554 128.4
C 15 214 227678 1768.5 551 554 128.4
D 7 38 5690887 50073.06 468 454 113.6
D 12 227 924567 8131.75 468 454 113.6
D 1 47 600922 5283.83 468 454 113.6

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