ASTROSAT CZTI

Data Quality Report

Orbit 04660

Creation date: 2024-06-27T14:45:13.182120
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/AS1G05_218T03_9000000582_04660cztM0_level2.evt modeM0/AS1G05_218T03_9000000582_04660cztM0_level2_quad_clean.evt
Size (bytes)398,793,60060,324,480
Size380.3 MB 57.5 MB
Events in quadrant A2,640,266371,768
Events in quadrant B2,547,192385,778
Events in quadrant C2,269,212375,835
Events in quadrant D4,281,055342,496

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112192
B0109392
C0103482
D0162112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997330.660396%
B4997280.560336%
C4997180.360216%
D49972915.823494%

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 6362 4998 17 17 0.27% 0.34%
B 6362 4998 7 7 0.11% 0.14%
C 6362 4998 0 0 0.00% 0.00%
D 6362 4998 227 227 3.57% 4.54%

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 7 16 351793 2913.54 589 578 120.5
A 13 14 10962 86.14 589 578 120.5
A 8 15 7769 59.65 589 578 120.5
B 10 16 87764 760.49 603 589 114.6
B 15 204 45328 390.29 603 589 114.6
B 8 3 21295 180.63 603 589 114.6
C 13 61 4810 31.33 581 584 134.9
C 9 247 2203 12.0 581 584 134.9
C 7 247 1565 7.27 581 584 134.9
D 8 112 1665060 12463.2 559 543 133.6
D 13 235 149013 1111.68 559 543 133.6
D 10 15 118660 884.41 559 543 133.6

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