ASTROSAT CZTI

Data Quality Report

Orbit 41217

Creation date: 2024-06-27T22:26:04.788964
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/AS1C07_001T12_9000005632_41217cztM0_level2.fits modeM0/AS1C07_001T12_9000005632_41217cztM0_level2_quad_clean.evt
Size (bytes)342,319,68088,669,440
Size326.5 MB 84.6 MB
Events in quadrant A2,868,862601,923
Events in quadrant B3,562,521595,636
Events in quadrant C2,933,872571,123
Events in quadrant D2,881,448534,129

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118373
B0144252
C0124142
D0124182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5455150.274977%
B54552113.868011%
C5455761.393217%
D5455390.714940%

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 7218 5456 6 6 0.08% 0.11%
B 7218 5456 180 180 2.49% 3.30%
C 7218 5456 71 71 0.98% 1.30%
D 7218 5456 36 36 0.50% 0.66%

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 546068 4623.92 578 566 118.0
A 0 8 25285 209.53 578 566 118.0
A 10 255 25051 207.55 578 566 118.0
B 0 186 1007760 9253.89 567 550 108.8
B 0 245 144776 1325.1 567 550 108.8
B 0 190 141417 1294.24 567 550 108.8
C 14 254 332153 2562.13 559 561 129.4
C 15 214 233121 1796.94 559 561 129.4
C 0 10 183671 1414.85 559 561 129.4
D 5 222 185191 1328.52 564 547 139.0
D 13 249 174103 1248.74 564 547 139.0
D 2 120 117670 842.7 564 547 139.0

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