ASTROSAT CZTI

Data Quality Report

Orbit 28887

Creation date: 2024-06-27T19:57:36.498822
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/AS1A10_064T01_9000004144_28887cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28887cztM0_level2_quad_clean.evt
Size (bytes)765,610,56087,347,520
Size730.1 MB 83.3 MB
Events in quadrant A3,007,461592,890
Events in quadrant B3,088,329603,570
Events in quadrant C4,857,537557,641
Events in quadrant D11,798,899441,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131601
B0133241
C0189501
D0394577

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433340.528525%
B6434450.699409%
C64342353.652471%
D6433309648.126846%

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 7398 6433 0 0 0.00% 0.00%
B 7399 6434 1 1 0.01% 0.02%
C 7399 6434 41 41 0.55% 0.64%
D 7397 6432 3296 3296 44.56% 51.24%

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 14562 89.05 773 758 155.0
A 13 254 11708 70.64 773 758 155.0
A 3 137 7566 43.92 773 758 155.0
B 0 190 21296 139.24 772 752 147.5
B 15 32 18427 119.79 772 752 147.5
B 12 111 18122 117.73 772 752 147.5
C 3 233 1795463 10203.49 744 746 175.9
C 14 238 123393 697.28 744 746 175.9
C 2 114 15418 83.41 744 746 175.9
D 8 195 7786978 49727.23 653 633 156.6
D 1 52 1194818 7626.62 653 633 156.6
D 7 80 305440 1946.64 653 633 156.6

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