ASTROSAT CZTI

Data Quality Report

Orbit 22421

Creation date: 2024-06-27T18:40:46.922657
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/AS1A07_007T03_9000003320_22421cztM0_level2.evt modeM0/AS1A07_007T03_9000003320_22421cztM0_level2_quad_clean.evt
Size (bytes)476,533,44096,635,520
Size454.5 MB 92.2 MB
Events in quadrant A3,064,708643,716
Events in quadrant B3,161,920662,771
Events in quadrant C3,247,619625,380
Events in quadrant D4,547,351572,695

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128562
B0131142
C0133432
D0175963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044260.430179%
B6044410.678359%
C60441362.250165%
D60434006.619229%

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 7429 6045 0 0 0.00% 0.00%
B 7429 6045 0 0 0.00% 0.00%
C 7429 6045 24 24 0.32% 0.40%
D 7428 6044 324 324 4.36% 5.36%

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 3 1 10165 59.85 790 775 156.9
A 15 174 9887 58.08 790 775 156.9
A 13 254 9624 56.4 790 775 156.9
B 3 64 36082 241.13 795 776 146.4
B 12 111 16663 108.5 795 776 146.4
B 11 111 14664 94.85 795 776 146.4
C 14 238 122676 679.46 769 774 179.4
C 0 10 91147 503.72 769 774 179.4
C 1 16 27458 148.73 769 774 179.4
D 1 52 865298 4835.45 746 726 178.8
D 13 172 593184 3313.55 746 726 178.8
D 13 249 194776 1085.3 746 726 178.8

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