ASTROSAT CZTI

Data Quality Report

Orbit 40767

Creation date: 2024-06-27T22:20:13.162274
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/AS1C07_001T10_9000005566_40767cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40767cztM0_level2_quad_clean.evt
Size (bytes)353,926,08084,669,120
Size337.5 MB 80.7 MB
Events in quadrant A2,888,586578,955
Events in quadrant B3,093,111591,998
Events in quadrant C3,087,381573,325
Events in quadrant D3,623,745452,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117843
B0128512
C0126372
D0144942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5237370.706511%
B52372063.933550%
C52371102.100439%
D523783515.944243%

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 7269 5238 27 27 0.37% 0.52%
B 7269 5238 156 156 2.15% 2.98%
C 7269 5238 119 119 1.64% 2.27%
D 7269 5237 237 237 3.26% 4.53%

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 495102 4309.2 560 549 114.8
A 6 10 136621 1185.64 560 549 114.8
A 13 248 59898 517.13 560 549 114.8
B 5 255 496008 4641.12 555 540 106.8
B 15 85 160138 1494.98 555 540 106.8
B 0 190 135236 1261.72 555 540 106.8
C 9 187 503349 3996.52 543 545 125.8
C 15 214 225126 1785.08 543 545 125.8
C 14 254 166162 1316.4 543 545 125.8
D 12 227 784406 6481.14 497 481 121.0
D 2 249 306283 2528.23 497 481 121.0
D 12 191 151821 1251.21 497 481 121.0

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