ASTROSAT CZTI

Data Quality Report

Orbit 20316

Creation date: 2024-06-27T18:13:47.706886
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/AS1A05_174T01_9000003008_20316cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20316cztM0_level2_quad_clean.evt
Size (bytes)1,508,261,760228,470,400
Size1.4 GB 217.9 MB
Events in quadrant A8,754,7781,443,957
Events in quadrant B9,423,3411,458,612
Events in quadrant C15,669,7091,360,729
Events in quadrant D10,589,0641,387,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380094
B0398904
C0592944
D0442544

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184112601.412199%
B184112641.433925%
C1841011025.985877%
D184102631.428571%

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 20446 18413 2 2 0.01% 0.01%
B 20446 18414 22 22 0.11% 0.12%
C 20445 18412 493 493 2.41% 2.68%
D 20445 18413 120 120 0.59% 0.65%

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 14 111 65186 141.21 2211 2157 446.3
A 14 238 55098 118.61 2211 2157 446.3
A 10 253 52051 111.79 2211 2157 446.3
B 0 197 231252 547.92 2195 2137 418.2
B 7 220 182204 430.63 2195 2137 418.2
B 4 142 125731 295.57 2195 2137 418.2
C 3 9 7146798 14583.27 2099 2110 489.9
C 14 238 323351 655.7 2099 2110 489.9
C 3 233 18432 33.32 2099 2110 489.9
D 5 222 1591830 3039.81 2159 2097 523.0
D 1 52 463194 881.69 2159 2097 523.0
D 9 1 215951 408.92 2159 2097 523.0

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