ASTROSAT CZTI

Data Quality Report

Orbit 24978

Creation date: 2024-06-27T19:12:13.553538
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/AS1A08_003T17_9000003656_24978cztM0_level2.evt modeM0/AS1A08_003T17_9000003656_24978cztM0_level2_quad_clean.evt
Size (bytes)151,004,16034,513,920
Size144.0 MB 32.9 MB
Events in quadrant A870,316234,810
Events in quadrant B925,507236,906
Events in quadrant C893,245225,565
Events in quadrant D1,760,225216,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036540
B038730
C036930
D063670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178530.168067%
B178630.167973%
C1786140.783875%
D1786683.807391%

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 1785 1785 0 0 0.00% 0.00%
B 1786 1786 2 2 0.11% 0.11%
C 1786 1786 0 0 0.00% 0.00%
D 1786 1786 70 70 3.92% 3.92%

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 13 254 2657 51.76 225 220 47.1
A 3 137 2064 39.16 225 220 47.1
A 0 226 1955 36.85 225 220 47.1
B 3 64 32622 730.21 221 215 44.4
B 10 251 15027 333.75 221 215 44.4
B 0 190 5213 112.62 221 215 44.4
C 14 238 34308 649.35 216 217 52.5
C 7 247 6371 117.22 216 217 52.5
C 8 128 4713 85.64 216 217 52.5
D 7 238 736913 13252.8 220 214 55.6
D 8 195 66030 1183.99 220 214 55.6
D 1 52 48640 871.16 220 214 55.6

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