ASTROSAT CZTI

Data Quality Report

Orbit 54647

Creation date: 2025-11-04T03:59:18.343101
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_066T07_9000006522_54647cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54647cztM0_level2_quad_clean.evt
Size (bytes)467,873,28095,996,160
Size446.2 MB 91.5 MB
Events in quadrant A3,130,233653,331
Events in quadrant B3,437,863689,906
Events in quadrant C5,469,058580,726
Events in quadrant D4,788,280539,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137023
B0146742
C0208932
D0185592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63511111.747756%
B63512393.763187%
C63516309.919698%
D63516199.746497%

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 7536 6352 21 21 0.28% 0.33%
B 7536 6352 94 94 1.25% 1.48%
C 7536 6352 449 449 5.96% 7.07%
D 7536 6352 486 486 6.45% 7.65%

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 6 87275 478.39 734 716 180.9
A 11 3 45801 249.17 734 716 180.9
A 5 240 31517 170.23 734 716 180.9
B 12 0 217932 1398.56 722 697 155.3
B 10 247 142891 915.45 722 697 155.3
B 2 249 119472 764.68 722 697 155.3
C 9 38 2254163 11809.12 697 690 190.8
C 6 223 289824 1515.18 697 690 190.8
C 4 5 51529 266.42 697 690 190.8
D 2 62 1606009 8268.05 682 651 194.2
D 14 52 153322 786.3 682 651 194.2
D 6 239 107084 548.16 682 651 194.2

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