ASTROSAT CZTI

Data Quality Report

Orbit 36821

Creation date: 2024-06-27T21:32:02.643499
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_36821cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36821cztM0_level2_quad_clean.evt
Size (bytes)2,001,542,400146,874,240
Size1.9 GB 140.1 MB
Events in quadrant A7,054,6111,016,279
Events in quadrant B36,129,206439,704
Events in quadrant C7,938,5941,020,212
Events in quadrant D8,519,099967,454

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302714
B01171673
C0325693
D0353263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14491310.213926%
B144911363794.106687%
C144911811.249051%
D144913962.732731%

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 44111 14494 13 13 0.03% 0.09%
B 44110 14490 13278 13278 30.10% 91.64%
C 44111 14494 153 153 0.35% 1.06%
D 44111 14494 339 339 0.77% 2.34%

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 510195 1522.75 1649 1615 334.0
A 9 143 78517 230.25 1649 1615 334.0
A 13 6 39765 114.23 1649 1615 334.0
B 12 1 32057021 225183.59 763 744 142.4
B 5 172 588194 4126.62 763 744 142.4
B 12 18 95867 668.2 763 744 142.4
C 14 254 786046 2113.08 1605 1617 371.2
C 15 214 611048 1641.67 1605 1617 371.2
C 0 10 126913 337.52 1605 1617 371.2
D 13 249 635871 1639.21 1597 1554 387.0
D 2 250 570834 1471.14 1597 1554 387.0
D 2 153 305004 784.18 1597 1554 387.0

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