ASTROSAT CZTI

Data Quality Report

Orbit 04476

Creation date: 2024-06-27T14:42:38.097683
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/AS1G05_253T03_9000000562_04476cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04476cztM0_level2_quad_clean.evt
Size (bytes)474,572,16075,867,840
Size452.6 MB 72.4 MB
Events in quadrant A3,383,577454,106
Events in quadrant B3,362,431458,739
Events in quadrant C3,188,845462,785
Events in quadrant D3,962,930435,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148602
B0146077
C0144131
D0166251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69882213.162564%
B69851972.820329%
C69881371.960504%
D69882864.092730%

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 7248 6990 24 24 0.33% 0.34%
B 7248 6990 6 6 0.08% 0.09%
C 7248 6990 0 0 0.00% 0.00%
D 7248 6990 110 110 1.52% 1.57%

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 186914 1096.28 819 800 169.8
A 15 234 21410 121.4 819 800 169.8
A 0 226 8494 45.32 819 800 169.8
B 15 185 32333 194.31 830 810 162.2
B 15 54 32175 193.33 830 810 162.2
B 4 48 28860 172.9 830 810 162.2
C 9 247 28657 148.65 802 807 187.4
C 9 16 13177 66.03 802 807 187.4
C 9 54 10125 49.74 802 807 187.4
D 13 235 526408 2730.62 791 767 192.5
D 5 51 114320 589.89 791 767 192.5
D 8 112 81717 420.52 791 767 192.5

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