ASTROSAT CZTI

Data Quality Report

Orbit 08950

Creation date: 2024-06-27T15:39:21.313858
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/AS1A03_051T01_9000001242_08950cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08950cztM0_level2_quad_clean.evt
Size (bytes)384,249,60069,468,480
Size366.4 MB 66.3 MB
Events in quadrant A3,064,097430,802
Events in quadrant B2,711,361434,850
Events in quadrant C2,542,072422,121
Events in quadrant D2,928,510414,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130719
B0119423
C0117515
D0125257

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740711.236934%
B5742530.923023%
C5741130.226441%
D5740440.766551%

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 6048 5744 1 1 0.02% 0.02%
B 6048 5744 1 1 0.02% 0.02%
C 6048 5744 0 0 0.00% 0.00%
D 6048 5744 35 35 0.58% 0.61%

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 8 5 452229 3275.79 672 658 137.9
A 13 251 14491 100.35 672 658 137.9
A 5 16 12958 89.23 672 658 137.9
B 0 168 38125 283.07 679 661 132.3
B 12 111 13998 100.77 679 661 132.3
B 0 197 13251 95.12 679 661 132.3
C 13 61 4913 27.9 651 653 152.7
C 3 202 1649 6.52 651 653 152.7
C -1 -1 -1 -1.0 651 653 152.7
D 8 195 171541 984.46 647 631 173.6
D 1 52 131226 752.24 647 631 173.6
D 13 104 43655 247.82 647 631 173.6

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