ASTROSAT CZTI

Data Quality Report

Orbit 12477

Creation date: 2024-06-27T16:27:56.954722
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/AS1A04_174T01_9000001850_12477cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12477cztM0_level2_quad_clean.evt
Size (bytes)671,022,72080,392,320
Size639.9 MB 76.7 MB
Events in quadrant A9,838,454447,768
Events in quadrant B3,818,800536,323
Events in quadrant C3,087,209534,895
Events in quadrant D3,175,923499,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333682
B0150721
C0128011
D0130791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935235039.595619%
B59352564.313395%
C5935350.589722%
D5935290.488627%

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 7286 5936 1709 1709 23.46% 28.79%
B 7286 5937 167 167 2.29% 2.81%
C 7286 5937 29 29 0.40% 0.49%
D 7286 5937 24 24 0.33% 0.40%

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 13 251 6958255 51501.4 668 656 135.1
A 12 189 74438 546.15 668 656 135.1
A 1 162 66853 490.0 668 656 135.1
B 4 239 555305 3923.69 755 741 141.3
B 0 85 163729 1153.18 755 741 141.3
B 3 64 46239 321.91 755 741 141.3
C 15 208 194192 1137.33 739 747 170.1
C 13 61 5452 27.66 739 747 170.1
C 14 234 5451 27.65 739 747 170.1
D 1 52 256251 1465.65 725 706 174.4
D 13 104 39917 224.89 725 706 174.4
D 9 85 36252 203.87 725 706 174.4

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