ASTROSAT CZTI

Data Quality Report

Orbit 25915

Creation date: 2024-06-27T19:22:46.577589
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/AS1A07_068T01_9000003756_25915cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25915cztM0_level2_quad_clean.evt
Size (bytes)933,456,96087,425,280
Size890.2 MB 83.4 MB
Events in quadrant A16,074,336319,996
Events in quadrant B3,731,270620,019
Events in quadrant C3,657,858586,368
Events in quadrant D4,291,480589,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529120
B0159480
C0158930
D0178780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7611528669.452109%
B76121411.852338%
C76121451.904887%
D7611991.300749%

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 8311 7612 4602 4602 55.37% 60.46%
B 8312 7614 0 0 0.00% 0.00%
C 8312 7614 6 6 0.07% 0.08%
D 8311 7613 37 37 0.45% 0.49%

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 0 13 13822813 117467.21 581 569 117.7
A 12 16 8584 68.11 581 569 117.7
A 13 254 7786 61.33 581 569 117.7
B 0 219 56304 308.28 920 896 179.7
B 0 190 41463 225.7 920 896 179.7
B 12 111 22279 118.97 920 896 179.7
C 14 238 141249 680.92 878 883 206.1
C 2 16 51815 247.07 878 883 206.1
C 3 233 44589 212.02 878 883 206.1
D 1 52 835462 3874.52 892 868 215.4
D 7 80 63191 289.33 892 868 215.4
D 2 234 32224 145.57 892 868 215.4

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