ASTROSAT CZTI

Data Quality Report

Orbit 55212

Creation date: 2025-12-12T03:19:45.789300
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/AS1A14_022T16_9000006532_55212cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55212cztM0_level2_quad_clean.evt
Size (bytes)398,404,80098,078,400
Size379.9 MB 93.5 MB
Events in quadrant A3,256,361646,048
Events in quadrant B3,026,964690,777
Events in quadrant C3,973,063600,941
Events in quadrant D3,986,150579,544

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144852
B0138342
C0164852
D0164692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64881161.787916%
B6488761.171393%
C64892503.852674%
D64891412.172908%

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 8638 6490 72 72 0.83% 1.11%
B 8638 6490 32 32 0.37% 0.49%
C 8639 6491 191 191 2.21% 2.94%
D 8639 6490 128 128 1.48% 1.97%

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 0 8 312095 1783.62 701 687 174.6
A 12 115 84499 480.04 701 687 174.6
A 4 3 30099 168.46 701 687 174.6
B 2 249 104939 695.16 697 673 150.0
B 10 247 77918 515.01 697 673 150.0
B 5 172 23330 151.06 697 673 150.0
C 12 254 489870 2617.22 679 672 186.9
C 13 3 330186 1762.91 679 672 186.9
C 14 254 274891 1467.08 679 672 186.9
D 11 129 703114 3635.45 681 651 193.2
D 2 249 361431 1867.14 681 651 193.2
D 3 12 131480 677.08 681 651 193.2

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