ASTROSAT CZTI

Data Quality Report

Orbit 12408

Creation date: 2024-06-27T16:26:52.124243
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/AS1A04_023T01_9000001842_12408cztM0_level2.evt modeM0/AS1A04_023T01_9000001842_12408cztM0_level2_quad_clean.evt
Size (bytes)261,898,56044,398,080
Size249.8 MB 42.3 MB
Events in quadrant A1,996,149277,979
Events in quadrant B2,030,036284,830
Events in quadrant C1,613,981280,247
Events in quadrant D2,068,416269,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080413
B080732
C069912
D083282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32532086.394098%
B32533139.621887%
C32531755.379650%
D32531905.840762%

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 3494 3255 7 7 0.20% 0.22%
B 3494 3254 84 84 2.40% 2.58%
C 3494 3255 0 0 0.00% 0.00%
D 3494 3255 18 18 0.52% 0.55%

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 12 189 104970 1185.59 422 411 88.2
A 14 237 83392 940.92 422 411 88.2
A 13 251 69759 786.34 422 411 88.2
B 4 239 353119 4226.94 415 403 83.4
B 3 209 15340 179.0 415 403 83.4
B 0 187 13467 156.56 415 403 83.4
C 8 128 3146 27.73 412 413 98.6
C 13 61 2980 26.05 412 413 98.6
C 8 112 1767 13.74 412 413 98.6
D 1 52 425411 4182.24 412 398 101.6
D 14 34 26147 253.38 412 398 101.6
D 7 80 19294 185.94 412 398 101.6

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