ASTROSAT CZTI

Data Quality Report

Orbit 40808

Creation date: 2024-06-27T22:20:46.591071
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_099T03_9000005570_40808cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40808cztM0_level2_quad_clean.evt
Size (bytes)285,946,56087,557,760
Size272.7 MB 83.5 MB
Events in quadrant A2,807,448598,940
Events in quadrant B2,333,677622,674
Events in quadrant C2,555,371568,281
Events in quadrant D2,509,823521,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113123
B099592
C0104492
D0108582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4851250.515358%
B4851120.247372%
C4851551.133787%
D4851581.195630%

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 6974 4852 11 11 0.16% 0.23%
B 6974 4852 4 4 0.06% 0.08%
C 6974 4852 54 54 0.77% 1.11%
D 6974 4852 47 47 0.67% 0.97%

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 469306 4035.2 565 556 116.2
A 13 248 137947 1182.72 565 556 116.2
A 2 79 9800 79.58 565 556 116.2
B 5 255 58032 532.54 567 555 107.9
B 4 171 21235 191.61 567 555 107.9
B 12 111 13522 120.14 567 555 107.9
C 15 214 209535 1643.67 548 552 127.1
C 0 10 186663 1463.78 548 552 127.1
C 12 249 10907 81.44 548 552 127.1
D 12 233 90692 673.6 542 525 133.9
D 1 47 82537 612.68 542 525 133.9
D 2 249 74484 552.52 542 525 133.9

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