ASTROSAT CZTI

Data Quality Report

Orbit 53934

Creation date: 2025-09-17T02:54:38.001934
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_057T04_9000006508_53934cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53934cztM0_level2_quad_clean.evt
Size (bytes)682,577,28084,899,520
Size651.0 MB 81.0 MB
Events in quadrant A3,663,917637,954
Events in quadrant B4,112,770665,023
Events in quadrant C4,293,036595,313
Events in quadrant D12,702,946228,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153682
B0167992
C0170172
D0421215

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63631632.561685%
B63633415.359107%
C63632503.928964%
D6362402363.234832%

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 7568 6364 143 143 1.89% 2.25%
B 7568 6364 257 257 3.40% 4.04%
C 7568 6364 243 243 3.21% 3.82%
D 7567 6363 3695 3695 48.83% 58.07%

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 15 174 390105 2277.65 695 679 171.0
A 4 249 312674 1824.78 695 679 171.0
A 0 8 74406 431.21 695 679 171.0
B 0 213 329352 2230.73 686 663 147.3
B 5 185 306541 2075.92 686 663 147.3
B 1 223 287768 1948.51 686 663 147.3
C 1 241 711886 3837.12 675 669 185.4
C 9 38 530584 2858.97 675 669 185.4
C 12 252 195582 1051.58 675 669 185.4
D 8 176 8387381 74676.13 380 361 112.3
D 6 239 978695 8710.86 380 361 112.3
D 2 165 537047 4778.53 380 361 112.3

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