ASTROSAT CZTI

Data Quality Report

Orbit 41678

Creation date: 2024-06-27T22:31:36.585242
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/AS1T05_110T01_9000005686_41678cztM0_level2.fits modeM0/AS1T05_110T01_9000005686_41678cztM0_level2_quad_clean.evt
Size (bytes)288,233,28088,404,480
Size274.9 MB 84.3 MB
Events in quadrant A2,709,759602,376
Events in quadrant B2,254,247609,715
Events in quadrant C2,467,258586,059
Events in quadrant D2,855,721535,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110791
B099651
C0102792
D0118291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4901120.244848%
B4902100.203998%
C4901470.958988%
D49011422.897368%

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 7024 4902 4 4 0.06% 0.08%
B 7025 4903 2 2 0.03% 0.04%
C 7024 4902 39 39 0.56% 0.80%
D 7024 4902 139 139 1.98% 2.84%

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 483001 4233.02 557 547 114.0
A 13 248 30268 260.77 557 547 114.0
A 7 3 13365 112.46 557 547 114.0
B 0 190 48148 451.21 553 539 105.5
B 5 255 16848 154.57 553 539 105.5
B 0 245 16245 148.85 553 539 105.5
C 15 214 200062 1562.69 548 552 127.7
C 0 10 128614 1003.07 548 552 127.7
C 13 61 3597 23.85 548 552 127.7
D 13 249 349563 2633.79 546 531 132.5
D 2 249 292212 2201.02 546 531 132.5
D 2 234 25837 190.96 546 531 132.5

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