ASTROSAT CZTI

Data Quality Report

Orbit 51011

Creation date: 2025-03-04T09:30:41.583741
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_001T02_9000006452_51011cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51011cztM0_level2_quad_clean.evt
Size (bytes)611,789,760100,054,080
Size583.4 MB 95.4 MB
Events in quadrant A5,243,495638,050
Events in quadrant B4,500,345718,207
Events in quadrant C8,269,490553,387
Events in quadrant D4,064,242608,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206392
B0186702
C0296582
D0174962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73384225.750886%
B73392142.915929%
C7339137318.708271%
D73391271.730481%

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 8878 7340 317 317 3.57% 4.32%
B 8879 7341 65 65 0.73% 0.89%
C 8879 7341 1145 1145 12.90% 15.60%
D 8879 7341 100 100 1.13% 1.36%

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 14 254 662333 3582.14 742 726 184.7
A 15 239 471037 2546.4 742 726 184.7
A 10 253 286335 1546.37 742 726 184.7
B 4 171 495888 3059.4 758 731 161.8
B 4 81 343964 2120.71 758 731 161.8
B 12 32 163777 1007.4 758 731 161.8
C 4 12 2377339 12055.66 696 689 197.1
C 0 209 1209775 6133.14 696 689 197.1
C 15 158 391833 1984.1 696 689 197.1
D 2 216 193347 942.25 735 708 204.4
D 2 120 152708 743.47 735 708 204.4
D 10 181 137359 668.4 735 708 204.4

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