ASTROSAT CZTI

Data Quality Report

Orbit 51258

Creation date: 2025-03-20T23:05:07.785072
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/AS1C07_001T01_9000006454_51258cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51258cztM0_level2_quad_clean.evt
Size (bytes)719,026,56088,548,480
Size685.7 MB 84.4 MB
Events in quadrant A6,317,346607,049
Events in quadrant B4,500,545666,392
Events in quadrant C10,709,496375,004
Events in quadrant D4,563,493559,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234963
B0180662
C0364292
D0184962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67804396.474926%
B67803935.796460%
C6780298043.952802%
D67803344.926254%

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 7680 6781 289 289 3.76% 4.26%
B 7680 6780 202 202 2.63% 2.98%
C 7679 6780 2601 2601 33.87% 38.36%
D 7680 6781 215 215 2.80% 3.17%

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 12 3 1632117 9215.14 716 698 177.0
A 12 250 732545 4133.87 716 698 177.0
A 12 194 184335 1037.28 716 698 177.0
B 5 185 612015 3966.11 714 687 154.1
B 8 128 306226 1982.25 714 687 154.1
B 0 245 137367 886.74 714 687 154.1
C 4 12 5762247 37789.06 553 550 152.5
C 15 205 1933823 12679.7 553 550 152.5
C 3 233 515767 3379.14 553 550 152.5
D 3 12 439802 2245.67 697 671 195.5
D 2 216 246779 1258.57 697 671 195.5
D 8 176 236209 1204.52 697 671 195.5

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