ASTROSAT CZTI

Data Quality Report

Orbit 33238

Creation date: 2024-06-27T20:46:27.968913
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_067T01_9000004774_33238cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33238cztM0_level2_quad_clean.evt
Size (bytes)601,344,00063,089,280
Size573.5 MB 60.2 MB
Events in quadrant A2,460,023421,233
Events in quadrant B3,321,853410,856
Events in quadrant C2,745,071413,528
Events in quadrant D9,334,262300,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104843
B0131952
C0113592
D0314062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518560.115718%
B51852174.185149%
C5185941.812922%
D5185221242.661524%

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 7038 5186 0 0 0.00% 0.00%
B 7038 5186 156 156 2.22% 3.01%
C 7038 5186 68 68 0.97% 1.31%
D 7038 5186 1981 1981 28.15% 38.20%

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 14 4 9560 70.7 630 618 126.5
A 13 254 8825 64.89 630 618 126.5
A 13 6 7685 55.88 630 618 126.5
B 5 172 543145 4673.78 613 601 116.1
B 0 219 112145 960.9 613 601 116.1
B 5 200 85121 728.1 613 601 116.1
C 0 10 255598 1818.34 608 613 140.2
C 1 23 35081 245.8 608 613 140.2
C 14 254 26197 182.44 608 613 140.2
D 12 3 4372596 33963.31 512 498 128.7
D 8 195 1770757 13751.72 512 498 128.7
D 7 80 320767 2487.91 512 498 128.7

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