ASTROSAT CZTI

Data Quality Report

Orbit 37684

Creation date: 2024-06-27T21:43:05.314029
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_9000005342_37684cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37684cztM0_level2_quad_clean.evt
Size (bytes)378,616,32069,684,480
Size361.1 MB 66.5 MB
Events in quadrant A2,808,075425,998
Events in quadrant B2,706,460440,406
Events in quadrant C2,656,668442,877
Events in quadrant D2,921,616416,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119103
B0118502
C0113182
D0125632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5495110.200182%
B5495911.656051%
C5495120.218380%
D5495911.656051%

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 6959 5495 4 4 0.06% 0.07%
B 6958 5494 56 56 0.80% 1.02%
C 6958 5494 10 10 0.14% 0.18%
D 6958 5494 73 73 1.05% 1.33%

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 310103 2509.93 609 596 123.3
A 15 222 84145 677.54 609 596 123.3
A 13 248 29627 235.43 609 596 123.3
B 5 200 170190 1455.64 606 590 116.5
B 5 172 44677 378.39 606 590 116.5
B 0 230 33736 284.49 606 590 116.5
C 15 214 247187 1767.81 600 604 139.5
C 0 10 59531 422.46 600 604 139.5
C 15 159 4370 27.0 600 604 139.5
D 12 227 170110 1188.31 591 574 142.7
D 2 153 143073 998.8 591 574 142.7
D 13 249 114678 799.78 591 574 142.7

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