ASTROSAT CZTI

Data Quality Report

Orbit 08031

Creation date: 2024-06-27T15:27:06.074817
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/AS1A02_080T01_9000001104_08031cztM0_level2.evt modeM0/AS1A02_080T01_9000001104_08031cztM0_level2_quad_clean.evt
Size (bytes)562,878,72080,179,200
Size536.8 MB 76.5 MB
Events in quadrant A3,246,000524,271
Events in quadrant B3,488,570534,751
Events in quadrant C3,010,719510,428
Events in quadrant D6,875,877420,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138584
B0145163
C0131793
D0247993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62651011.612131%
B62651372.186752%
C6265320.510774%
D6265140522.426177%

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 7535 6267 15 15 0.20% 0.24%
B 7535 6267 44 44 0.58% 0.70%
C 7535 6267 0 0 0.00% 0.00%
D 7534 6265 1112 1112 14.76% 17.75%

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 4 2 148215 927.78 791 775 158.9
A 15 234 27841 170.32 791 775 158.9
A 8 6 10071 58.5 791 775 158.9
B 4 239 155808 1058.11 794 778 146.5
B 0 187 96952 656.4 794 778 146.5
B 10 16 51013 342.86 794 778 146.5
C 1 16 31334 175.56 759 764 174.1
C 13 61 5963 29.86 759 764 174.1
C 8 128 5678 28.22 759 764 174.1
D 2 250 3406238 19516.33 659 643 174.5
D 1 52 509131 2913.97 659 643 174.5
D 13 169 266435 1523.17 659 643 174.5

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