ASTROSAT CZTI

Data Quality Report

Orbit 31274

Creation date: 2024-06-27T20:25:54.251586
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_058T08_9000004528_31274cztM0_level2.evt modeM0/AS1A10_058T08_9000004528_31274cztM0_level2_quad_clean.evt
Size (bytes)1,040,201,280167,699,520
Size992.0 MB 159.9 MB
Events in quadrant A6,046,4121,075,494
Events in quadrant B9,922,2131,066,007
Events in quadrant C7,061,0121,022,697
Events in quadrant D7,604,1661,025,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264763
B0391453
C0290083
D0313793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12874720.559267%
B128742391.856455%
C128734023.122815%
D128731291.002097%

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 14239 12876 0 0 0.00% 0.00%
B 14239 12876 2 2 0.01% 0.02%
C 14238 12875 113 113 0.79% 0.88%
D 14238 12875 41 41 0.29% 0.32%

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 13 254 23411 69.55 1567 1536 314.5
A 3 137 16337 47.06 1567 1536 314.5
A 0 226 13275 37.32 1567 1536 314.5
B 6 159 3630752 12006.56 1548 1502 302.3
B 4 80 123982 405.2 1548 1502 302.3
B 12 111 38139 121.2 1548 1502 302.3
C 0 10 593651 1701.41 1484 1492 348.0
C 3 233 392474 1123.38 1484 1492 348.0
C 14 238 243665 695.82 1484 1492 348.0
D 8 195 1468196 3773.23 1505 1469 388.7
D 12 233 202402 516.91 1505 1469 388.7
D 2 250 150975 384.61 1505 1469 388.7

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