ASTROSAT CZTI

Data Quality Report

Orbit 27728

Creation date: 2024-06-27T19:43:36.189999
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_263T01_9000003990_27728cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27728cztM0_level2_quad_clean.evt
Size (bytes)646,669,44091,235,520
Size616.7 MB 87.0 MB
Events in quadrant A4,882,960589,722
Events in quadrant B4,196,692597,754
Events in quadrant C5,162,672549,165
Events in quadrant D4,872,612542,585

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193330
B0164950
C0197720
D0189390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69351452.090844%
B69363174.570358%
C69365007.208766%
D69364135.954441%

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 8420 6935 3 3 0.04% 0.04%
B 8421 6936 110 110 1.31% 1.59%
C 8421 6936 226 226 2.68% 3.26%
D 8421 6936 274 274 3.25% 3.95%

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 6 16 1305472 6710.45 925 909 194.4
A 13 254 10872 51.25 925 909 194.4
A 0 13 8869 40.94 925 909 194.4
B 3 64 572029 3142.52 908 888 181.7
B 4 200 24545 130.17 908 888 181.7
B 12 111 20821 109.67 908 888 181.7
C 3 233 1619022 7508.93 874 882 215.5
C 14 238 141404 652.09 874 882 215.5
C 13 61 5802 22.83 874 882 215.5
D 1 52 1386902 6318.6 868 847 219.4
D 11 176 113593 513.97 868 847 219.4
D 2 250 80162 361.57 868 847 219.4

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