ASTROSAT CZTI

Data Quality Report

Orbit 52938

Creation date: 2025-07-17T06:45:24.670571
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/AS1A13_003T01_9000006486_52938cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52938cztM0_level2_quad_clean.evt
Size (bytes)1,060,905,60080,144,640
Size1011.8 MB 76.4 MB
Events in quadrant A17,758,11885,663
Events in quadrant B4,279,169755,072
Events in quadrant C4,725,164644,843
Events in quadrant D11,938,041427,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577992
B0178230
C0191100
D0406270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7382660289.433758%
B73831732.343221%
C73831712.316132%
D7383280738.019775%

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 7381 7381 6138 6138 83.16% 83.16%
B 7383 7383 92 92 1.25% 1.25%
C 7383 7383 149 149 2.02% 2.02%
D 7383 7383 2152 2152 29.15% 29.15%

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 9 191 15392137 178179.88 338 329 86.4
A 4 238 675832 7819.81 338 329 86.4
A 4 249 93733 1081.27 338 329 86.4
B 1 239 557251 3286.85 790 762 169.3
B 8 3 164456 966.84 790 762 169.3
B 1 255 99797 584.94 790 762 169.3
C 15 224 525087 2508.19 767 761 209.0
C 10 19 217487 1036.74 767 761 209.0
C 9 38 212111 1011.02 767 761 209.0
D 8 176 4264239 22618.85 658 629 188.5
D 15 78 3892259 20645.46 658 629 188.5
D 2 249 256511 1357.48 658 629 188.5

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