ASTROSAT CZTI

Data Quality Report

Orbit 46777

Creation date: 2024-06-27T23:27:30.354834
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_053T01_9000006266_46777cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46777cztM0_level2_quad_clean.evt
Size (bytes)482,037,120106,925,760
Size459.7 MB 102.0 MB
Events in quadrant A6,656,618697,232
Events in quadrant B4,009,113747,230
Events in quadrant C2,996,623710,169
Events in quadrant D3,687,583638,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240371
B0161461
C0134311
D0154751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63623585.627161%
B6362851.336058%
C6363320.502907%
D63622123.332285%

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 7567 6362 187 187 2.47% 2.94%
B 7566 6362 25 25 0.33% 0.39%
C 7568 6364 26 26 0.34% 0.41%
D 7567 6363 215 215 2.84% 3.38%

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 10 83 3370664 23025.07 706 692 146.4
A 13 248 332630 2267.94 706 692 146.4
A 9 191 205622 1400.17 706 692 146.4
B 3 112 818050 5879.07 713 692 139.0
B 0 198 118236 845.47 713 692 139.0
B 15 201 65060 462.98 713 692 139.0
C 1 241 184738 1137.08 694 699 161.9
C 14 254 75288 460.85 694 699 161.9
C 3 233 28507 171.81 694 699 161.9
D 2 249 564778 3254.42 690 669 173.3
D 13 249 267270 1538.06 690 669 173.3
D 13 138 76354 436.64 690 669 173.3

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