ASTROSAT CZTI

Data Quality Report

Orbit 42106

Creation date: 2024-06-27T22:36:57.945762
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_044T22_9000005750_42106cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42106cztM0_level2_quad_clean.evt
Size (bytes)1,250,187,840237,931,200
Size1.2 GB 226.9 MB
Events in quadrant A20,748,4221,358,203
Events in quadrant B7,266,4301,693,947
Events in quadrant C7,242,3841,621,624
Events in quadrant D9,818,5791,456,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0724598
B0326324
C0312864
D0402324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15550317820.437299%
B155511470.945277%
C15551170.109318%
D155516544.205517%

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 19760 15553 2791 2791 14.12% 17.95%
B 19761 15554 105 105 0.53% 0.68%
C 19761 15554 6 6 0.03% 0.04%
D 19761 15554 558 558 2.82% 3.59%

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 12263272 36847.04 1625 1589 332.8
A 10 83 1309586 3930.6 1625 1589 332.8
A 15 223 847445 2541.84 1625 1589 332.8
B 5 255 574084 1741.84 1699 1652 328.6
B 12 111 42658 124.78 1699 1652 328.6
B 11 111 39517 115.22 1699 1652 328.6
C 15 214 636480 1618.45 1677 1685 392.2
C 8 79 42693 104.55 1677 1685 392.2
C 12 249 16410 37.54 1677 1685 392.2
D 12 233 1242651 3086.01 1651 1603 402.2
D 13 249 721806 1790.87 1651 1603 402.2
D 12 6 678443 1683.04 1651 1603 402.2

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