ASTROSAT CZTI

Data Quality Report

Orbit 36846

Creation date: 2024-06-27T21:32:18.711606
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/AS1A11_075T01_9000005244_36846cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36846cztM0_level2_quad_clean.evt
Size (bytes)353,088,00057,337,920
Size336.7 MB 54.7 MB
Events in quadrant A2,834,330443,711
Events in quadrant B886,6167,343
Events in quadrant C2,986,364452,197
Events in quadrant D3,584,594424,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120393
B059012
C0123072
D0146222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802170.293002%
B58025802100.000000%
C5802310.534299%
D58021973.395381%

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 7115 5803 10 10 0.14% 0.17%
B 7114 5801 0 0 0.00% 0.00%
C 7115 5803 27 27 0.38% 0.47%
D 7115 5803 155 155 2.18% 2.67%

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 10 83 233422 1758.53 651 637 132.4
A 15 223 55846 417.07 651 637 132.4
A 13 6 19067 139.23 651 637 132.4
B 12 243 803559 182297.61 12 12 4.4
B 12 144 15503 3514.38 12 12 4.4
B 5 255 8847 2004.36 12 12 4.4
C 15 214 252030 1695.74 633 637 148.2
C 0 10 126875 851.52 633 637 148.2
C 14 254 90487 606.07 633 637 148.2
D 13 171 604248 3873.16 628 610 155.9
D 1 52 159420 1018.98 628 610 155.9
D 2 250 99338 633.48 628 610 155.9

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