ASTROSAT CZTI

Data Quality Report

Orbit 54968

Creation date: 2025-11-25T18:47:57.467833
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_014T01_9000006528_54968cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54968cztM0_level2_quad_clean.evt
Size (bytes)1,706,676,480203,613,120
Size1.6 GB 194.2 MB
Events in quadrant A8,670,2661,513,207
Events in quadrant B7,433,0981,673,077
Events in quadrant C10,266,2961,451,563
Events in quadrant D35,553,019410,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375093
B0339883
C0420753
D01168628

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161866353.923143%
B161863191.970839%
C161867364.547140%
D161861177272.729519%

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 19256 16190 235 235 1.22% 1.45%
B 19256 16190 7 7 0.04% 0.04%
C 19256 16190 409 409 2.12% 2.53%
D 19256 16189 11396 11396 59.18% 70.39%

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 32 1355441 3143.71 1768 1721 430.6
A 0 8 130336 298.68 1768 1721 430.6
A 13 248 122294 280.0 1768 1721 430.6
B 5 172 201132 527.96 1766 1699 377.7
B 5 185 74529 192.8 1766 1699 377.7
B 2 249 62335 160.52 1766 1699 377.7
C 4 5 2650978 5630.42 1725 1709 470.5
C 12 252 188861 397.75 1725 1709 470.5
C 6 223 185546 390.7 1725 1709 470.5
D 15 94 30717162 118446.07 912 873 259.3
D 2 249 288420 1108.82 912 873 259.3
D 6 239 167093 640.97 912 873 259.3

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