ASTROSAT CZTI

Data Quality Report

Orbit 46810

Creation date: 2024-06-27T23:27:57.048031
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_001T10_9000006272_46810cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46810cztM0_level2_quad_clean.evt
Size (bytes)344,393,28070,626,240
Size328.4 MB 67.4 MB
Events in quadrant A4,211,779460,791
Events in quadrant B2,789,641478,310
Events in quadrant C2,049,435479,771
Events in quadrant D3,353,793409,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153413
B0113231
C094601
D0131171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44142094.734934%
B44141884.259175%
C4414591.336656%
D44143698.359764%

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 5349 4415 29 29 0.54% 0.66%
B 5349 4415 20 20 0.37% 0.45%
C 5349 4415 19 19 0.36% 0.43%
D 5349 4415 280 280 5.23% 6.34%

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 2269908 22847.2 477 466 99.3
A 0 243 36296 360.71 477 466 99.3
A 13 248 21357 210.32 477 466 99.3
B 3 112 640361 6726.06 481 466 95.1
B 15 36 63618 663.8 481 466 95.1
B 4 171 60319 629.12 481 466 95.1
C 14 254 147892 1306.79 480 482 112.8
C 12 249 9174 77.05 480 482 112.8
C 12 2 7168 59.27 480 482 112.8
D 13 249 964141 8237.97 462 448 117.0
D 1 52 493742 4216.84 462 448 117.0
D 13 138 35759 301.85 462 448 117.0

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