ASTROSAT CZTI

Data Quality Report

Orbit 52683

Creation date: 2025-06-24T21:15:25.818946
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/AS1C09_011T07_9000006480_52683cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52683cztM0_level2_quad_clean.evt
Size (bytes)899,835,84073,451,520
Size858.2 MB 70.0 MB
Events in quadrant A4,042,660577,103
Events in quadrant B8,851,140491,616
Events in quadrant C11,360,631317,719
Events in quadrant D8,580,687407,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161061
B0306241
C0380721
D0297502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61491532.488209%
B6150168727.430894%
C6150295748.081301%
D6149161926.329484%

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 7134 6150 101 101 1.42% 1.64%
B 7135 6151 1396 1396 19.57% 22.70%
C 7135 6151 2957 2957 41.44% 48.07%
D 7134 6150 1585 1585 22.22% 25.77%

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 3 14 813366 5081.25 637 620 160.0
A 3 62 130457 811.73 637 620 160.0
A 3 46 116255 722.94 637 620 160.0
B 10 128 4126486 33471.83 583 563 123.3
B 12 32 967678 7845.79 583 563 123.3
B 4 171 446586 3618.39 583 563 123.3
C 15 248 5180074 37794.16 492 487 137.0
C 14 96 1591485 11609.12 492 487 137.0
C 9 38 915149 6674.06 492 487 137.0
D 8 176 2359673 14755.94 554 527 159.9
D 1 7 1728566 10808.51 554 527 159.9
D 12 33 1176036 7352.55 554 527 159.9

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