ASTROSAT CZTI

Data Quality Report

Orbit 12879

Creation date: 2024-06-27T16:33:29.266891
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/AS1C03_001T01_9000001894_12879cztM0_level2.evt modeM0/AS1C03_001T01_9000001894_12879cztM0_level2_quad_clean.evt
Size (bytes)279,296,64056,920,320
Size266.4 MB 54.3 MB
Events in quadrant A1,635,359400,550
Events in quadrant B2,162,864373,013
Events in quadrant C1,385,451395,905
Events in quadrant D3,075,676346,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065582
B082401
C059311
D0111001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2910511.752577%
B291033211.408935%
C291060.206186%
D291048916.804124%

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 4071 2912 0 0 0.00% 0.00%
B 4071 2910 165 165 4.05% 5.67%
C 4071 2912 0 0 0.00% 0.00%
D 4071 2912 417 417 10.24% 14.32%

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 15 222 74841 985.39 368 359 75.6
A 1 162 42079 551.95 368 359 75.6
A 12 189 31184 407.81 368 359 75.6
B 4 239 448243 6960.75 339 331 64.3
B 0 85 290094 4503.05 339 331 64.3
B 0 182 36670 564.72 339 331 64.3
C 13 61 2641 27.73 355 355 82.4
C 3 202 854 6.05 355 355 82.4
C -1 -1 -1 -1.0 355 355 82.4
D 1 52 1465959 18045.82 332 321 81.2
D 4 95 239548 2945.51 332 321 81.2
D 8 195 90978 1116.22 332 321 81.2

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