ASTROSAT CZTI

Data Quality Report

Orbit 53836

Creation date: 2025-09-10T13:17:45.372581
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_022T04_9000006506_53836cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53836cztM0_level2_quad_clean.evt
Size (bytes)347,304,96057,072,960
Size331.2 MB 54.4 MB
Events in quadrant A2,063,200391,944
Events in quadrant B1,814,456415,801
Events in quadrant C3,694,067336,855
Events in quadrant D4,961,320291,171

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090900
B086300
C0139690
D0176370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A414420.048263%
B4145190.458384%
C414546811.290712%
D414580519.420989%

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 4144 4144 3 3 0.07% 0.07%
B 4145 4145 17 17 0.41% 0.41%
C 4145 4145 472 472 11.39% 11.39%
D 4144 4144 855 855 20.63% 20.63%

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 8 249 303155 2872.68 422 410 105.4
A 8 6 61134 576.2 422 410 105.4
A 8 206 17087 158.24 422 410 105.4
B 5 185 42957 472.29 415 401 90.1
B 10 247 37869 415.83 415 401 90.1
B 8 234 26730 292.2 415 401 90.1
C 1 241 948153 8797.02 388 384 107.7
C 15 224 844257 7832.67 388 384 107.7
C 12 252 120765 1117.35 388 384 107.7
D 15 93 2007364 18848.52 372 355 106.5
D 8 176 579207 5436.2 372 355 106.5
D 2 172 535652 5027.16 372 355 106.5

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