ASTROSAT CZTI

Data Quality Report

Orbit 40918

Creation date: 2024-06-27T22:22:13.123407
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_044T19_9000005580_40918cztM0_level2.fits modeM0/AS1A12_044T19_9000005580_40918cztM0_level2_quad_clean.evt
Size (bytes)893,592,000246,381,120
Size852.2 MB 235.0 MB
Events in quadrant A8,146,7151,647,903
Events in quadrant B7,010,1291,696,639
Events in quadrant C7,385,7621,592,358
Events in quadrant D9,329,5811,448,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328995
B0315274
C0316714
D0385014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15553300.192889%
B15553260.167170%
C15553530.340770%
D155534282.751881%

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 19765 15556 7 7 0.04% 0.04%
B 19765 15556 10 10 0.05% 0.06%
C 19765 15556 37 37 0.19% 0.24%
D 19765 15556 355 355 1.80% 2.28%

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 1383647 3872.19 1734 1695 356.9
A 10 255 36553 97.67 1734 1695 356.9
A 13 254 23087 59.94 1734 1695 356.9
B 15 85 76527 224.09 1723 1677 334.0
B 5 255 71493 209.02 1723 1677 334.0
B 12 111 42865 123.31 1723 1677 334.0
C 15 214 657136 1687.15 1674 1683 388.5
C 0 10 159924 407.32 1674 1683 388.5
C 10 70 17593 40.95 1674 1683 388.5
D 2 249 805504 1957.7 1666 1618 410.6
D 12 233 650256 1579.62 1666 1618 410.6
D 12 16 426260 1034.13 1666 1618 410.6

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