ASTROSAT CZTI

Data Quality Report

Orbit 34823

Creation date: 2022-03-08T01:46:29.733596
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/AS1C07_005T01_9000004992_34823cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34823cztM0_level2_quad_clean.evt
Size (bytes)817,035,84080,861,760
Size779.2 MB 77.1 MB
Events in quadrant A4,402,060622,803
Events in quadrant B13,571,739241,036
Events in quadrant C2,899,437617,916
Events in quadrant D3,507,687588,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168613
B0439952
C0118682
D0142222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53731773.294249%
B53735373100.000000%
C5373741.377257%
D5373841.563372%

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 7075 5374 99 99 1.40% 1.84%
B 7074 5372 5274 5274 74.55% 98.18%
C 7075 5374 52 52 0.73% 0.97%
D 7075 5374 66 66 0.93% 1.23%

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 15 169 1957685 15820.44 611 600 123.7
A 10 83 53299 426.0 611 600 123.7
A 13 6 17960 140.33 611 600 123.7
B 5 14 3782105 72473.81 266 260 52.2
B 5 31 3702193 70942.41 266 260 52.2
B 5 15 3682917 70573.01 266 260 52.2
C 15 214 246704 1795.85 591 594 137.0
C 0 10 211141 1536.35 591 594 137.0
C 14 67 96441 699.39 591 594 137.0
D 8 195 524696 3661.74 588 571 143.1
D 13 249 149401 1039.78 588 571 143.1
D 2 250 101411 704.51 588 571 143.1

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