ASTROSAT CZTI

Data Quality Report

Orbit 39867

Creation date: 2024-06-27T22:09:35.525755
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/AS1A12_022T01_9000005498_39867cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39867cztM0_level2_quad_clean.evt
Size (bytes)170,285,76044,357,760
Size162.4 MB 42.3 MB
Events in quadrant A1,285,991296,207
Events in quadrant B1,112,683304,581
Events in quadrant C2,370,337275,520
Events in quadrant D1,313,974266,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057940
B056210
C089730
D062590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280310.035676%
B280320.071352%
C28032057.313593%
D2803481.712451%

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 2803 2803 0 0 0.00% 0.00%
B 2803 2803 0 0 0.00% 0.00%
C 2803 2803 218 218 7.78% 7.78%
D 2803 2803 43 43 1.53% 1.53%

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 10 83 201349 3462.97 278 272 58.1
A 13 254 5794 95.1 278 272 58.1
A 7 3 4167 67.08 278 272 58.1
B 5 255 11236 199.51 278 271 55.0
B 12 111 6881 120.27 278 271 55.0
B 11 111 6236 108.53 278 271 55.0
C 9 187 1200205 19249.12 261 262 62.3
C 15 214 114162 1827.15 261 262 62.3
C 1 16 34136 543.4 261 262 62.3
D 2 249 164184 2458.39 266 258 66.7
D 13 249 117883 1764.01 266 258 66.7
D 2 250 14548 214.31 266 258 66.7

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