ASTROSAT CZTI

Data Quality Report

Orbit 31571

Creation date: 2024-06-27T20:30:05.547395
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_056T01_9000004598_31571cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31571cztM0_level2_quad_clean.evt
Size (bytes)354,795,84077,264,640
Size338.4 MB 73.7 MB
Events in quadrant A1,946,330520,604
Events in quadrant B3,239,696536,883
Events in quadrant C2,430,787509,855
Events in quadrant D2,850,940484,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08592162
B012785223
C09972167
D011495224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101
B0101
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0831
B0831
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407430.073638%
B4078290.711133%
C4076932.281649%
D4077621.520726%

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 6715 4086 0 0 0.00% 0.00%
B 6715 4089 7 7 0.10% 0.17%
C 6715 4087 17 17 0.25% 0.42%
D 6715 4087 41 41 0.61% 1.00%

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 7259 67.88 502 493 99.7
A 8 255 7038 65.66 502 493 99.7
A 3 137 4791 43.12 502 493 99.7
B 6 159 1131821 11753.15 509 498 96.3
B 4 80 68774 709.31 509 498 96.3
B 0 190 20282 205.53 509 498 96.3
C 3 233 366381 3253.77 490 494 112.5
C 14 238 81478 720.18 490 494 112.5
C 0 10 23946 208.55 490 494 112.5
D 8 195 843462 7357.85 481 470 114.6
D 12 218 76108 660.19 481 470 114.6
D 7 223 27779 238.36 481 470 114.6

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