ASTROSAT CZTI

Data Quality Report

Orbit 36201

Creation date: 2022-06-09T06:55:48.095435
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_097T17_9000005170_36201cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36201cztM0_level2_quad_clean.evt
Size (bytes)436,057,92076,357,440
Size415.9 MB 72.8 MB
Events in quadrant A2,686,159490,786
Events in quadrant B3,082,616494,302
Events in quadrant C3,599,060493,289
Events in quadrant D3,482,868467,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114353
B0124812
C0141152
D0137462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5235110.210124%
B52351753.342884%
C52352204.202483%
D52352514.794651%

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 7148 5236 1 1 0.01% 0.02%
B 7148 5236 100 100 1.40% 1.91%
C 7148 5236 178 178 2.49% 3.40%
D 7148 5236 218 218 3.05% 4.16%

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 171551 1371.5 619 606 124.6
A 15 223 62016 492.69 619 606 124.6
A 8 144 43332 342.79 619 606 124.6
B 5 172 460987 3992.73 614 596 115.3
B 4 171 126904 1095.4 614 596 115.3
B 0 245 42201 360.82 614 596 115.3
C 15 208 548521 3894.39 609 616 140.7
C 15 214 235890 1672.27 609 616 140.7
C 4 254 222451 1576.75 609 616 140.7
D 12 6 515512 3534.03 601 586 145.7
D 12 227 342450 2346.27 601 586 145.7
D 12 233 121693 831.18 601 586 145.7

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