ASTROSAT CZTI

Data Quality Report

Orbit 11211

Creation date: 2024-06-27T16:09:49.040084
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/AS1G08_075T01_9000001636_11211cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11211cztM0_level2_quad_clean.evt
Size (bytes)1,087,277,760165,882,240
Size1.0 GB 158.2 MB
Events in quadrant A9,630,5841,017,893
Events in quadrant B8,144,3071,030,360
Events in quadrant C6,206,5571,040,914
Events in quadrant D8,014,039980,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377584
B0332378
C0283183
D0333584

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138066104.418369%
B138035433.933927%
C138061320.956106%
D138055153.730532%

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 15576 13809 224 224 1.44% 1.62%
B 15576 13808 213 213 1.37% 1.54%
C 15576 13809 2 2 0.01% 0.01%
D 15576 13809 263 263 1.69% 1.90%

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 8 5 1768453 5390.24 1603 1564 327.8
A 8 15 796289 2424.46 1603 1564 327.8
A 15 174 420729 1278.74 1603 1564 327.8
B 4 239 1336317 4324.15 1605 1561 308.7
B 15 204 242714 781.25 1605 1561 308.7
B 4 80 90692 288.75 1605 1561 308.7
C 14 234 25096 63.78 1581 1588 368.6
C 13 61 11961 28.14 1581 1588 368.6
C 5 128 8940 19.95 1581 1588 368.6
D 2 14 458816 1216.65 1556 1513 375.9
D 13 104 395810 1049.02 1556 1513 375.9
D 12 17 337877 894.89 1556 1513 375.9

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