ASTROSAT CZTI

Data Quality Report

Orbit 30631

Creation date: 2024-06-27T20:17:55.543514
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/AS1A10_055T01_9000004414_30631cztM0_level2.evt modeM0/AS1A10_055T01_9000004414_30631cztM0_level2_quad_clean.evt
Size (bytes)672,963,840106,168,320
Size641.8 MB 101.2 MB
Events in quadrant A3,439,331731,641
Events in quadrant B5,154,583722,846
Events in quadrant C3,728,936685,514
Events in quadrant D7,630,810633,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140081
B0195471
C0149861
D0271251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63371332.098785%
B63382233.518460%
C63382754.338908%
D633885213.442726%

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 7447 6338 7 7 0.09% 0.11%
B 7448 6339 20 20 0.27% 0.32%
C 7448 6339 43 43 0.58% 0.68%
D 7448 6339 804 804 10.79% 12.68%

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 0 13 90652 522.79 865 852 171.8
A 8 192 13230 72.06 865 852 171.8
A 13 254 12604 68.42 865 852 171.8
B 6 159 1727762 10857.04 841 822 159.1
B 6 36 62525 387.92 841 822 159.1
B 12 111 18867 113.45 841 822 159.1
C 3 233 245285 1328.25 805 813 184.1
C 10 22 138992 750.75 805 813 184.1
C 14 238 134472 726.19 805 813 184.1
D 8 195 3741675 19859.59 804 786 188.4
D 12 218 226140 1196.36 804 786 188.4
D 13 249 206551 1092.36 804 786 188.4

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