ASTROSAT CZTI

Data Quality Report

Orbit 19220

Creation date: 2024-06-27T18:00:23.437716
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_075T10_9000002842_19220cztM0_level2.evt modeM0/AS1A05_075T10_9000002842_19220cztM0_level2_quad_clean.evt
Size (bytes)235,641,60048,222,720
Size224.7 MB 46.0 MB
Events in quadrant A1,661,846311,318
Events in quadrant B1,672,467317,740
Events in quadrant C1,947,863308,455
Events in quadrant D1,643,966303,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070071
B070371
C077921
D069661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3067812.641017%
B3067872.836648%
C30671223.977828%
D3067702.282361%

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 4297 3067 1 1 0.02% 0.03%
B 4297 3067 0 0 0.00% 0.00%
C 4297 3067 0 0 0.00% 0.00%
D 4297 3067 6 6 0.14% 0.20%

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 9 143 18277 209.66 425 417 85.2
A 11 29 5883 64.16 425 417 85.2
A 0 226 3674 38.23 425 417 85.2
B 12 111 9393 109.72 426 415 81.8
B 11 111 8446 98.15 426 415 81.8
B 14 111 7289 84.01 426 415 81.8
C 3 233 273460 2842.24 412 416 96.1
C 14 238 63536 657.05 412 416 96.1
C 13 61 2926 26.13 412 416 96.1
D 11 176 49306 483.49 420 408 101.1
D 2 234 12893 123.45 420 408 101.1
D 5 222 6525 60.48 420 408 101.1

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