ASTROSAT CZTI

Data Quality Report

Orbit 24662

Creation date: 2024-06-27T19:08:29.661999
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/AS1T03_191T01_9000003618_24662cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24662cztM0_level2_quad_clean.evt
Size (bytes)437,569,920126,800,640
Size417.3 MB 120.9 MB
Events in quadrant A2,995,857870,493
Events in quadrant B3,009,375880,375
Events in quadrant C3,050,669842,607
Events in quadrant D3,787,211827,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127521
B0127761
C0129021
D0152431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016290.482048%
B6017370.614924%
C6017761.263088%
D6017600.997175%

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 7166 6017 2 2 0.03% 0.03%
B 7167 6017 1 1 0.01% 0.02%
C 7167 6017 0 0 0.00% 0.00%
D 7167 6018 32 32 0.45% 0.53%

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 4 2 12038 73.61 771 755 153.3
A 13 254 9298 55.74 771 755 153.3
A 6 16 8695 51.8 771 755 153.3
B 12 111 16976 113.04 760 742 143.6
B 11 111 15175 100.5 760 742 143.6
B 14 111 13921 91.77 760 742 143.6
C 14 238 120553 696.93 740 745 171.9
C 10 91 41729 238.41 740 745 171.9
C 13 61 5148 25.61 740 745 171.9
D 8 195 657802 3641.95 753 731 180.4
D 1 52 235453 1300.99 753 731 180.4
D 7 238 28000 151.14 753 731 180.4

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