ASTROSAT CZTI

Data Quality Report

Orbit 25618

Creation date: 2024-06-27T19:19:35.401311
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/AS1A09_081T01_9000003730_25618cztM0_level2.evt modeM0/AS1A09_081T01_9000003730_25618cztM0_level2_quad_clean.evt
Size (bytes)482,443,20098,925,120
Size460.1 MB 94.3 MB
Events in quadrant A4,303,736631,499
Events in quadrant B3,245,644678,086
Events in quadrant C3,138,108636,159
Events in quadrant D3,495,772610,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167970
B0136610
C0133290
D0146420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62993385.365931%
B6299220.349262%
C6299400.635021%
D6298240.381073%

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 7549 6299 311 311 4.12% 4.94%
B 7549 6300 5 5 0.07% 0.08%
C 7549 6300 0 0 0.00% 0.00%
D 7548 6299 28 28 0.37% 0.44%

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 1107693 7168.23 774 759 154.4
A 8 192 168263 1084.71 774 759 154.4
A 6 16 25945 163.1 774 759 154.4
B 0 190 27888 180.33 802 782 150.3
B 0 219 24892 160.4 802 782 150.3
B 5 172 18829 120.06 802 782 150.3
C 14 238 123422 683.37 768 774 179.5
C 3 233 10441 53.86 768 774 179.5
C 13 61 5283 25.12 768 774 179.5
D 1 52 326251 1740.44 766 744 187.0
D 8 195 205341 1093.95 766 744 187.0
D 13 174 29858 155.67 766 744 187.0

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