ASTROSAT CZTI

Data Quality Report

Orbit 27188

Creation date: 2024-06-27T19:37:31.807997
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_27188cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27188cztM0_level2_quad_clean.evt
Size (bytes)569,692,800101,295,360
Size543.3 MB 96.6 MB
Events in quadrant A3,868,697642,791
Events in quadrant B3,858,416659,348
Events in quadrant C3,798,215625,998
Events in quadrant D5,202,762601,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164520
B0163150
C0162510
D0208680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77491201.548587%
B77501682.167742%
C77501772.283871%
D77502843.664516%

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 8459 7752 5 5 0.06% 0.06%
B 8460 7753 3 3 0.04% 0.04%
C 8460 7753 6 6 0.07% 0.08%
D 8460 7753 153 153 1.81% 1.97%

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 56026 280.12 968 948 196.6
A 6 16 31319 154.46 968 948 196.6
A 13 248 29611 145.78 968 948 196.6
B 12 111 23083 119.87 967 943 184.7
B 11 111 20396 105.32 967 943 184.7
B 14 111 17804 91.29 967 943 184.7
C 14 238 145360 657.52 925 931 219.7
C 15 208 47272 210.97 925 931 219.7
C 13 61 6261 24.27 925 931 219.7
D 1 52 959017 3889.17 917 898 246.4
D 12 227 267291 1081.33 917 898 246.4
D 2 250 174996 706.69 917 898 246.4

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