ASTROSAT CZTI

Data Quality Report

Orbit 27293

Creation date: 2024-06-27T19:38:31.273441
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/AS1T03_243T01_9000003918_27293cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27293cztM0_level2_quad_clean.evt
Size (bytes)1,459,474,560232,764,480
Size1.4 GB 222.0 MB
Events in quadrant A9,326,4781,465,863
Events in quadrant B9,888,6351,489,992
Events in quadrant C9,296,3981,415,306
Events in quadrant D14,369,8811,332,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402140
B0409150
C0399150
D0560000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195171510.773684%
B195172311.183584%
C195172081.065738%
D1951712086.189476%

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 21423 19522 18 18 0.08% 0.09%
B 21423 19522 16 16 0.07% 0.08%
C 21423 19522 0 0 0.00% 0.00%
D 21423 19522 960 960 4.48% 4.92%

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 13 248 104215 212.13 2389 2337 480.3
A 13 254 30873 59.42 2389 2337 480.3
A 3 137 22692 42.38 2389 2337 480.3
B 7 205 385221 841.7 2377 2317 454.9
B 12 111 56496 119.1 2377 2317 454.9
B 0 244 51764 108.7 2377 2317 454.9
C 14 238 364938 676.8 2276 2291 535.8
C 15 208 40968 72.18 2276 2291 535.8
C 13 61 15844 25.29 2276 2291 535.8
D 1 52 4120624 7623.85 2229 2180 540.2
D 12 233 1140503 2107.2 2229 2180 540.2
D 2 250 391604 720.88 2229 2180 540.2

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