ASTROSAT CZTI

Data Quality Report

Orbit 35044

Creation date: 2022-03-22T23:27:18.831488
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/AS1A10_123T17_9000005018_35044cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35044cztM0_level2_quad_clean.evt
Size (bytes)457,830,720107,187,840
Size436.6 MB 102.2 MB
Events in quadrant A2,731,643735,050
Events in quadrant B3,097,318733,169
Events in quadrant C3,025,443735,461
Events in quadrant D4,658,114678,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113833
B0124082
C0121532
D0175742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520980.153580%
B52091292.476483%
C5209420.806297%
D52092294.396237%

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 9215 5211 0 0 0.00% 0.00%
B 9215 5211 90 90 0.98% 1.73%
C 9215 5211 27 27 0.29% 0.52%
D 9215 5211 203 203 2.20% 3.90%

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 10 83 76956 571.04 678 667 133.6
A 15 169 20368 147.47 678 667 133.6
A 13 6 10475 73.42 678 667 133.6
B 5 172 393668 3163.96 664 647 124.2
B 0 190 47955 380.85 664 647 124.2
B 4 232 35136 277.65 664 647 124.2
C 15 214 217696 1418.38 667 674 153.0
C 0 10 149846 974.94 667 674 153.0
C 14 67 50980 328.78 667 674 153.0
D 8 195 1018510 6441.29 657 641 158.0
D 5 223 256566 1619.55 657 641 158.0
D 13 249 250184 1579.16 657 641 158.0

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