ASTROSAT CZTI

Data Quality Report

Orbit 39426

Creation date: 2024-06-27T22:04:25.285857
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_077T06_9000005474_39426cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39426cztM0_level2_quad_clean.evt
Size (bytes)1,333,359,360243,789,120
Size1.2 GB 232.5 MB
Events in quadrant A11,959,3511,696,881
Events in quadrant B8,029,1631,713,876
Events in quadrant C16,771,3301,485,029
Events in quadrant D11,394,9071,410,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459515
B0347044
C0605284
D04492711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156073742.396361%
B156073602.306657%
C15607224414.378164%
D1545312007.765482%

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 19786 15610 208 208 1.05% 1.33%
B 19786 15610 266 266 1.34% 1.70%
C 19786 15610 1887 1887 9.54% 12.09%
D 19786 15456 975 975 4.93% 6.31%

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 3978848 11381.14 1722 1684 349.5
A 10 83 1157656 3307.96 1722 1684 349.5
A 2 79 102974 289.85 1722 1684 349.5
B 5 172 1232765 3691.63 1711 1661 333.5
B 5 255 43705 126.07 1711 1661 333.5
B 12 111 42127 121.34 1711 1661 333.5
C 15 208 9156917 24581.91 1605 1613 372.4
C 15 214 619091 1657.92 1605 1613 372.4
C 3 233 336787 899.94 1605 1613 372.4
D 12 235 1866135 4716.63 1609 1562 395.3
D 12 0 1378942 3484.23 1609 1562 395.3
D 13 249 634942 1602.2 1609 1562 395.3

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