ASTROSAT CZTI

Data Quality Report

Orbit 13846

Creation date: 2024-06-27T16:46:51.738425
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_199T01_9000002040_13846cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13846cztM0_level2_quad_clean.evt
Size (bytes)436,533,12082,258,560
Size416.3 MB 78.4 MB
Events in quadrant A3,006,868517,228
Events in quadrant B2,995,958522,946
Events in quadrant C2,895,593513,936
Events in quadrant D3,890,839494,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132382
B0131091
C0129661
D0157111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6346500.787898%
B6346510.803656%
C6346310.488497%
D6346961.512764%

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 7227 6347 5 5 0.07% 0.08%
B 7227 6347 5 5 0.07% 0.08%
C 7227 6347 0 0 0.00% 0.00%
D 7227 6347 57 57 0.79% 0.90%

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 9 143 80635 513.7 748 730 155.5
A 8 15 22033 136.95 748 730 155.5
A 1 162 13251 80.5 748 730 155.5
B 0 219 24879 169.06 745 727 142.9
B 4 80 20088 135.52 745 727 142.9
B 12 111 16655 111.49 745 727 142.9
C 3 233 51373 296.82 729 731 170.6
C 13 61 5162 25.97 729 731 170.6
C 14 220 2644 11.21 729 731 170.6
D 1 52 809726 4639.06 723 705 174.4
D 10 157 222670 1272.79 723 705 174.4
D 5 222 35395 198.92 723 705 174.4

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