ASTROSAT CZTI

Data Quality Report

Orbit 40957

Creation date: 2024-06-27T22:22:42.452854
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_052T04_9000005582_40957cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40957cztM0_level2_quad_clean.evt
Size (bytes)333,213,12090,023,040
Size317.8 MB 85.9 MB
Events in quadrant A3,033,289611,972
Events in quadrant B2,363,917620,892
Events in quadrant C2,661,837581,408
Events in quadrant D3,844,372524,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124463
B0111392
C0114722
D0154202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553190.162719%
B553140.072320%
C5531280.506238%
D55313125.640933%

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 5532 3 3 0.04% 0.05%
B 7024 5532 0 0 0.00% 0.00%
C 7024 5532 24 24 0.34% 0.43%
D 7024 5532 281 281 4.00% 5.08%

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 502436 4097.0 596 583 122.5
A 12 189 200907 1635.39 596 583 122.5
A 15 191 15376 120.76 596 583 122.5
B 12 111 14641 122.41 593 576 114.9
B 0 186 13929 116.21 593 576 114.9
B 11 111 13576 113.14 593 576 114.9
C 15 214 255602 1864.39 583 587 136.8
C 0 10 100035 727.05 583 587 136.8
C 14 254 13190 92.14 583 587 136.8
D 13 249 750883 5323.47 572 554 140.9
D 2 249 749246 5311.85 572 554 140.9
D 12 6 75435 531.27 572 554 140.9

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