ASTROSAT CZTI

Data Quality Report

Orbit 24520

Creation date: 2024-06-27T19:06:50.745643
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_183T01_9000003606_24520cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24520cztM0_level2_quad_clean.evt
Size (bytes)616,170,240127,785,600
Size587.6 MB 121.9 MB
Events in quadrant A3,672,072927,415
Events in quadrant B6,453,612832,485
Events in quadrant C4,078,891837,927
Events in quadrant D4,043,691846,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149891
B0231431
C0160091
D0160461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097821.344924%
B6097132421.715598%
C60984487.346671%
D6098931.525090%

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 7467 6098 3 3 0.04% 0.05%
B 7467 6098 969 969 12.98% 15.89%
C 7468 6099 276 276 3.70% 4.53%
D 7468 6099 49 49 0.66% 0.80%

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 14 111 520757 3236.91 816 803 160.6
A 13 254 10552 60.69 816 803 160.6
A 4 2 7985 44.71 816 803 160.6
B 3 64 3564089 26264.8 735 719 135.7
B 12 111 15626 109.88 735 719 135.7
B 7 202 14614 102.42 735 719 135.7
C 2 16 729327 4321.85 734 739 168.6
C 10 9 358675 2123.21 734 739 168.6
C 14 238 120669 711.4 734 739 168.6
D 1 52 999500 5470.97 769 748 182.6
D 8 195 93048 505.6 769 748 182.6
D 2 234 24482 130.01 769 748 182.6

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