ASTROSAT CZTI

Data Quality Report

Orbit 37872

Creation date: 2024-06-27T21:45:32.499701
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_9000005352_37872cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37872cztM0_level2_quad_clean.evt
Size (bytes)430,171,20081,460,800
Size410.2 MB 77.7 MB
Events in quadrant A2,835,195534,107
Events in quadrant B3,126,956526,588
Events in quadrant C2,836,050518,591
Events in quadrant D3,850,341497,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119343
B0130312
C0118992
D0152912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5571130.233351%
B55711703.051517%
C5571470.843655%
D55712103.769521%

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 7123 5572 6 6 0.08% 0.11%
B 7123 5572 127 127 1.78% 2.28%
C 7123 5572 44 44 0.62% 0.79%
D 7123 5572 160 160 2.25% 2.87%

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 370138 2964.62 615 604 124.6
A 13 248 28814 226.32 615 604 124.6
A 13 6 20793 161.97 615 604 124.6
B 5 172 392114 3419.29 603 588 114.5
B 4 232 181558 1580.45 603 588 114.5
B 0 229 66652 576.95 603 588 114.5
C 15 214 234327 1690.89 596 601 138.2
C 0 10 191254 1379.28 596 601 138.2
C 14 254 55545 397.49 596 601 138.2
D 7 38 580718 3959.52 594 576 146.5
D 1 52 372976 2541.66 594 576 146.5
D 2 250 152170 1034.64 594 576 146.5

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