ASTROSAT CZTI

Data Quality Report

Orbit 09301

Creation date: 2024-06-27T15:44:16.404392
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/AS1G07_077T04_9000001312_09301cztM0_level2.evt modeM0/AS1G07_077T04_9000001312_09301cztM0_level2_quad_clean.evt
Size (bytes)463,469,76096,036,480
Size442.0 MB 91.6 MB
Events in quadrant A3,751,319607,167
Events in quadrant B3,312,744617,228
Events in quadrant C3,134,558610,563
Events in quadrant D3,368,863592,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155107
B0143503
C0140265
D0148774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6896751.087587%
B6897751.087429%
C6896560.812065%
D68971191.725388%

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 7738 6898 4 4 0.05% 0.06%
B 7738 6899 7 7 0.09% 0.10%
C 7738 6899 0 0 0.00% 0.00%
D 7738 6899 53 53 0.68% 0.77%

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 8 5 484521 2903.61 817 799 166.6
A 1 162 47412 279.8 817 799 166.6
A 12 236 39170 230.33 817 799 166.6
B 0 214 84833 532.65 817 796 157.8
B 4 80 17745 107.42 817 796 157.8
B 12 111 17607 106.55 817 796 157.8
C 14 67 13183 66.62 798 799 185.9
C 13 61 6004 28.0 798 799 185.9
C 8 222 4360 19.16 798 799 185.9
D 2 136 166696 857.3 787 768 193.5
D 1 52 100415 514.85 787 768 193.5
D 7 71 37781 191.24 787 768 193.5

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