ASTROSAT CZTI

Data Quality Report

Orbit 22178

Creation date: 2024-06-27T18:37:49.713946
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_007T03_9000003280_22178cztM0_level2.evt modeM0/AS1A07_007T03_9000003280_22178cztM0_level2_quad_clean.evt
Size (bytes)230,051,52047,465,280
Size219.4 MB 45.3 MB
Events in quadrant A1,573,991309,597
Events in quadrant B1,649,400313,682
Events in quadrant C1,573,166293,779
Events in quadrant D1,944,423285,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067241
B069151
C067081
D079391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3301150.454408%
B3301240.727052%
C3301260.787640%
D3301591.787337%

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 3301 3301 0 0 0.00% 0.00%
B 3301 3301 1 1 0.03% 0.03%
C 3301 3301 0 0 0.00% 0.00%
D 3301 3301 33 33 1.00% 1.00%

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 5871 65.94 408 401 83.0
A 0 226 3461 36.89 408 401 83.0
A 3 137 3363 35.7 408 401 83.0
B 0 190 33852 436.57 401 392 76.6
B 4 171 23269 298.49 401 392 76.6
B 0 219 9483 118.62 401 392 76.6
C 14 238 61804 675.54 384 387 90.9
C 9 54 7241 75.39 384 387 90.9
C 0 10 3619 35.55 384 387 90.9
D 1 52 425980 4518.13 390 379 94.2
D 7 38 14735 152.4 390 379 94.2
D 2 234 13067 134.69 390 379 94.2

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