ASTROSAT CZTI

Data Quality Report

Orbit 18482

Creation date: 2024-06-27T17:50:24.057333
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/AS1A05_075T09_9000002740_18482cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18482cztM0_level2_quad_clean.evt
Size (bytes)456,105,60090,691,200
Size435.0 MB 86.5 MB
Events in quadrant A3,273,192578,850
Events in quadrant B3,641,827595,612
Events in quadrant C3,274,612581,930
Events in quadrant D3,211,010565,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136661
B0149191
C0136921
D0136611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6082470.772772%
B60821121.841500%
C6082851.397567%
D6083510.838402%

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 7367 6082 3 3 0.04% 0.05%
B 7367 6082 43 43 0.58% 0.71%
C 7367 6082 0 0 0.00% 0.00%
D 7368 6083 23 23 0.31% 0.38%

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 0 13 86598 529.79 807 792 162.0
A 4 2 53713 326.75 807 792 162.0
A 15 174 19118 113.15 807 792 162.0
B 10 245 417577 2722.54 813 796 153.1
B 0 229 22495 141.74 813 796 153.1
B 12 111 17627 109.95 813 796 153.1
C 14 238 125845 680.74 795 802 183.7
C 3 233 49310 264.08 795 802 183.7
C 13 61 5598 26.11 795 802 183.7
D 10 70 39530 199.38 800 780 194.4
D 7 223 32667 164.07 800 780 194.4
D 2 234 29473 147.63 800 780 194.4

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