ASTROSAT CZTI

Data Quality Report

Orbit 00859

Creation date: 2024-06-27T14:03:55.238951
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/AS1P01_165T02_9000000120_00859cztM0_level2.evt modeM0/AS1P01_165T02_9000000120_00859cztM0_level2_quad_clean.evt
Size (bytes)1,101,536,64073,886,400
Size1.0 GB 70.5 MB
Events in quadrant A8,384,653448,984
Events in quadrant B8,848,177447,356
Events in quadrant C8,155,170438,913
Events in quadrant D7,526,701433,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296740
B0310850
C0289690
D0271850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672790.133789%
B6727380.564888%
C672770.104058%
D6727180.267578%

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 6727 6727 370 370 5.50% 5.50%
B 6727 6727 509 509 7.57% 7.57%
C 6727 6727 336 336 4.99% 4.99%
D 6727 6727 216 216 3.21% 3.21%

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 0 214 117716 220.25 2153 2171 524.6
A 8 192 8604 12.26 2153 2171 524.6
A 11 79 7869 10.86 2153 2171 524.6
B 0 220 115041 210.0 2258 2270 537.0
B 0 184 55675 99.45 2258 2270 537.0
B 5 249 41221 72.53 2258 2270 537.0
C 9 54 51566 85.65 2052 2128 577.2
C 3 111 34875 56.74 2052 2128 577.2
C 3 79 20852 32.44 2052 2128 577.2
D 13 169 58205 91.56 1960 2029 613.5
D 13 170 45755 71.27 1960 2029 613.5
D 2 16 42458 65.89 1960 2029 613.5

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