ASTROSAT CZTI

Data Quality Report

Orbit 28747

Creation date: 2024-06-27T19:55:44.712713
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_123T08_9000004126_28747cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28747cztM0_level2_quad_clean.evt
Size (bytes)521,994,240109,990,080
Size497.8 MB 104.9 MB
Events in quadrant A3,307,225747,847
Events in quadrant B3,346,860755,171
Events in quadrant C3,748,353704,179
Events in quadrant D4,978,698683,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133982
B0135592
C0152082
D0192572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301360.571338%
B6302630.999683%
C63021001.586798%
D63022604.125674%

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 7651 6301 0 0 0.00% 0.00%
B 7652 6302 4 4 0.05% 0.06%
C 7652 6303 0 0 0.00% 0.00%
D 7652 6303 217 217 2.84% 3.44%

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 13 254 12627 69.6 856 842 169.3
A 3 137 7522 39.45 856 842 169.3
A 0 226 7452 39.04 856 842 169.3
B 5 255 29572 186.49 835 817 154.2
B 12 111 17749 109.81 835 817 154.2
B 11 111 16278 100.27 835 817 154.2
C 3 233 480529 2659.43 795 801 180.4
C 14 238 140840 776.32 795 801 180.4
C 14 254 15153 79.56 795 801 180.4
D 1 52 960887 5170.04 799 781 185.7
D 8 195 884528 4758.86 799 781 185.7
D 12 233 55290 293.52 799 781 185.7

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