ASTROSAT CZTI

Data Quality Report

Orbit 35607

Creation date: 2022-04-29T23:09:19.907449
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_065T04_9000005098_35607cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35607cztM0_level2_quad_clean.evt
Size (bytes)505,143,36074,125,440
Size481.7 MB 70.7 MB
Events in quadrant A2,595,637497,584
Events in quadrant B4,172,873481,494
Events in quadrant C3,640,330471,467
Events in quadrant D4,530,475422,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111363
B0158822
C0141282
D0169372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529460.113336%
B52944087.706838%
C52942855.383453%
D529461111.541368%

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 7146 5295 1 1 0.01% 0.02%
B 7146 5295 315 315 4.41% 5.95%
C 7146 5295 228 228 3.19% 4.31%
D 7145 5294 496 496 6.94% 9.37%

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 140132 1105.16 629 618 126.2
A 8 144 8650 63.63 629 618 126.2
A 13 6 8129 59.5 629 618 126.2
B 5 172 1305149 11347.55 605 590 115.0
B 4 81 179150 1553.18 605 590 115.0
B 5 200 107064 926.15 605 590 115.0
C 0 10 475761 3422.35 597 602 138.8
C 1 23 406774 2925.47 597 602 138.8
C 15 214 214802 1542.79 597 602 138.8
D 7 80 1589748 11250.65 574 557 141.3
D 2 249 235820 1665.54 574 557 141.3
D 12 227 122609 864.06 574 557 141.3

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