ASTROSAT CZTI

Data Quality Report

Orbit 34228

Creation date: 2022-01-26T21:03:22.072537
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/AS1T05_003T01_9000004886_34228cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34228cztM0_level2_quad_clean.evt
Size (bytes)1,481,132,160172,811,520
Size1.4 GB 164.8 MB
Events in quadrant A6,991,1251,113,209
Events in quadrant B9,870,3431,078,341
Events in quadrant C9,895,5451,115,620
Events in quadrant D17,068,147869,309

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311324
B0391143
C0393533
D0610473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15299290.189555%
B152998935.836983%
C152993922.562259%
D15299333121.772665%

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 19596 15302 8 8 0.04% 0.05%
B 19596 15302 615 615 3.14% 4.02%
C 19596 15302 302 302 1.54% 1.97%
D 19596 15301 2895 2895 14.77% 18.92%

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 9 143 103088 292.61 1744 1709 346.5
A 13 6 48813 135.95 1744 1709 346.5
A 10 83 41161 113.87 1744 1709 346.5
B 5 172 1916608 5865.78 1705 1662 326.5
B 5 31 561393 1714.55 1705 1662 326.5
B 0 190 135784 410.84 1705 1662 326.5
C 7 220 789211 2024.32 1703 1720 389.0
C 15 214 647362 1659.69 1703 1720 389.0
C 14 254 502707 1287.84 1703 1720 389.0
D 1 52 7437318 20507.64 1483 1444 362.6
D 8 195 2531573 6977.92 1483 1444 362.6
D 7 80 457621 1258.1 1483 1444 362.6

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