ASTROSAT CZTI

Data Quality Report

Orbit 35778

Creation date: 2024-06-27T21:18:01.950802
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/AS1A09_121T01_9000005136_35778cztM0_level2.evt modeM0/AS1A09_121T01_9000005136_35778cztM0_level2_quad_clean.evt
Size (bytes)456,615,36079,280,640
Size435.5 MB 75.6 MB
Events in quadrant A2,781,517512,041
Events in quadrant B3,650,832509,571
Events in quadrant C3,448,495504,279
Events in quadrant D3,565,625481,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117273
B0143962
C0134072
D0141172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5623100.177841%
B56232233.965855%
C5623961.707274%
D56231472.614263%

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 7235 5624 0 0 0.00% 0.00%
B 7234 5623 163 163 2.25% 2.90%
C 7235 5624 67 67 0.93% 1.19%
D 7235 5624 132 132 1.82% 2.35%

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 168501 1216.89 672 659 137.9
A 13 6 10673 72.6 672 659 137.9
A 7 48 9999 67.72 672 659 137.9
B 5 172 483546 3838.04 653 636 125.8
B 5 255 262737 2083.11 653 636 125.8
B 0 213 65004 511.58 653 636 125.8
C 10 49 547589 3635.47 646 651 150.4
C 15 214 242982 1610.76 646 651 150.4
C 0 10 100101 661.04 646 651 150.4
D 7 223 220431 1382.48 649 631 159.0
D 10 118 178721 1120.13 649 631 159.0
D 13 249 148398 929.41 649 631 159.0

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