ASTROSAT CZTI

Data Quality Report

Orbit 08997

Creation date: 2024-06-27T15:39:55.072868
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/AS1C02_037T01_9000001252_08997cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_08997cztM0_level2_quad_clean.evt
Size (bytes)500,860,80067,584,960
Size477.7 MB 64.5 MB
Events in quadrant A4,281,085393,262
Events in quadrant B3,764,483394,012
Events in quadrant C3,136,964395,638
Events in quadrant D3,514,417379,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171613
B0156122
C0141186
D0152432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69501231.769784%
B69501702.446043%
C6948240.345423%
D6950801.151079%

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 7840 6950 53 53 0.68% 0.76%
B 7840 6950 83 83 1.06% 1.19%
C 7840 6951 0 0 0.00% 0.00%
D 7840 6951 52 52 0.66% 0.75%

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 8 5 935565 5510.81 822 802 169.6
A 5 16 78318 456.99 822 802 169.6
A 3 1 56568 328.76 822 802 169.6
B 10 16 307144 1922.18 827 807 159.4
B 4 48 94867 590.2 827 807 159.4
B 4 173 64066 396.93 827 807 159.4
C 1 3 6342 29.65 802 805 186.8
C 13 61 6108 28.39 802 805 186.8
C 12 4 2670 9.99 802 805 186.8
D 1 52 138581 638.44 789 774 215.9
D 7 71 111965 515.13 789 774 215.9
D 14 50 101416 466.26 789 774 215.9

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