ASTROSAT CZTI

Data Quality Report

Orbit 31958

Creation date: 2024-06-27T20:34:42.862567
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/AS1A10_094T34_9000004662_31958cztM0_level2.evt modeM0/AS1A10_094T34_9000004662_31958cztM0_level2_quad_clean.evt
Size (bytes)305,778,24046,569,600
Size291.6 MB 44.4 MB
Events in quadrant A1,616,082307,583
Events in quadrant B2,572,759309,081
Events in quadrant C2,444,400289,582
Events in quadrant D2,413,845280,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066211
B096791
C095081
D091571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3133331.053304%
B3133802.553463%
C31332196.990105%
D31332437.756144%

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 4243 3133 0 0 0.00% 0.00%
B 4243 3133 13 13 0.31% 0.41%
C 4243 3133 74 74 1.74% 2.36%
D 4243 3133 187 187 4.41% 5.97%

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 15 174 5822 64.2 416 407 84.3
A 13 254 5525 60.68 416 407 84.3
A 13 6 4586 49.54 416 407 84.3
B 6 159 857321 10775.01 410 399 79.5
B 5 172 49447 616.73 410 399 79.5
B 0 229 18178 223.55 410 399 79.5
C 3 233 458956 4950.53 392 396 92.6
C 0 10 362691 3911.27 392 396 92.6
C 14 238 67346 722.78 392 396 92.6
D 13 249 472555 5036.58 392 381 93.7
D 12 218 182467 1942.27 392 381 93.7
D 8 195 125819 1338.02 392 381 93.7

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