ASTROSAT CZTI

Data Quality Report

Orbit 31452

Creation date: 2024-06-27T20:28:40.958900
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/AS1T04_029T01_9000004582_31452cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31452cztM0_level2_quad_clean.evt
Size (bytes)562,510,08093,090,240
Size536.5 MB 88.8 MB
Events in quadrant A3,143,513622,898
Events in quadrant B5,568,984599,866
Events in quadrant C4,093,102571,861
Events in quadrant D3,799,640580,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133122
B0209232
C0162472
D0155272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351240.377893%
B63513856.062037%
C63514126.487167%
D6350340.535433%

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 7546 6352 0 0 0.00% 0.00%
B 7546 6351 310 310 4.11% 4.88%
C 7546 6351 221 221 2.93% 3.48%
D 7545 6351 16 16 0.21% 0.25%

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 0 230 12374 71.79 812 798 161.3
A 13 254 10061 57.44 812 798 161.3
A 3 137 7932 44.24 812 798 161.3
B 6 159 1755034 11888.76 777 759 147.6
B 12 1 714089 4834.25 777 759 147.6
B 0 190 23678 155.32 777 759 147.6
C 3 233 550651 3096.22 759 767 177.6
C 0 10 206404 1157.87 759 767 177.6
C 10 22 206070 1155.99 759 767 177.6
D 8 195 776421 4215.15 777 760 184.0
D 5 233 28573 151.14 777 760 184.0
D 2 234 24857 130.95 777 760 184.0

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