ASTROSAT CZTI

Data Quality Report

Orbit 27646

Creation date: 2024-06-27T19:42:32.305748
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_257T01_9000003976_27646cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27646cztM0_level2_quad_clean.evt
Size (bytes)566,375,04095,238,720
Size540.1 MB 90.8 MB
Events in quadrant A3,289,684648,985
Events in quadrant B3,905,718670,874
Events in quadrant C3,217,774627,535
Events in quadrant D6,324,915509,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136200
B0156530
C0132960
D0229110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121350.571802%
B61211392.270871%
C6120871.421569%
D6120111918.284314%

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 7451 6121 6 6 0.08% 0.10%
B 7451 6121 67 67 0.90% 1.09%
C 7450 6120 0 0 0.00% 0.00%
D 7449 6119 1036 1036 13.91% 16.93%

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 139427 863.43 814 798 160.6
A 8 192 11716 68.0 814 798 160.6
A 13 254 10861 62.68 814 798 160.6
B 10 245 517399 3427.86 817 799 150.7
B 0 230 92644 609.43 817 799 150.7
B 5 255 51428 335.95 817 799 150.7
C 14 238 127419 694.79 788 795 182.2
C 0 10 6505 31.33 788 795 182.2
C 13 61 5414 25.34 788 795 182.2
D 1 52 2769329 16323.25 714 697 169.6
D 2 250 729268 4295.49 714 697 169.6
D 11 176 54235 315.65 714 697 169.6

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