ASTROSAT CZTI

Data Quality Report

Orbit 23787

Creation date: 2024-06-27T18:58:43.600832
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/AS1A07_113T01_9000003526_23787cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23787cztM0_level2_quad_clean.evt
Size (bytes)478,382,40098,717,760
Size456.2 MB 94.1 MB
Events in quadrant A3,332,139625,178
Events in quadrant B3,481,396642,584
Events in quadrant C3,402,660617,480
Events in quadrant D3,784,545605,376

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147602
B0151082
C0148202
D0160343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71621011.410221%
B71631512.108055%
C71631371.912606%
D71621191.661547%

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 7307 7163 0 0 0.00% 0.00%
B 7308 7163 6 6 0.08% 0.08%
C 7308 7164 0 0 0.00% 0.00%
D 7307 7164 61 61 0.83% 0.85%

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 13 254 12887 68.81 863 845 175.0
A 3 137 7874 40.17 863 845 175.0
A 0 226 7464 37.82 863 845 175.0
B 3 64 71212 424.79 861 838 165.7
B 12 111 20280 117.35 861 838 165.7
B 11 111 18214 104.88 861 838 165.7
C 14 238 130353 662.0 828 835 195.6
C 7 247 25516 126.15 828 835 195.6
C 8 128 10241 48.08 828 835 195.6
D 8 195 293496 1417.78 836 809 206.4
D 1 52 136967 659.55 836 809 206.4
D 13 174 111362 535.52 836 809 206.4

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