ASTROSAT CZTI

Data Quality Report

Orbit 37812

Creation date: 2024-06-27T21:44:46.681565
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_103T06_9000005348_37812cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37812cztM0_level2_quad_clean.evt
Size (bytes)389,828,16083,252,160
Size371.8 MB 79.4 MB
Events in quadrant A2,810,669552,127
Events in quadrant B2,942,007553,059
Events in quadrant C2,575,116551,352
Events in quadrant D3,144,970520,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114213
B0117362
C0104872
D0125642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4899320.653195%
B48991002.041233%
C4899320.653195%
D48991903.878343%

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 9175 4901 18 18 0.20% 0.37%
B 9175 4901 79 79 0.86% 1.61%
C 9175 4901 18 18 0.20% 0.37%
D 9175 4901 173 173 1.89% 3.53%

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 325080 2705.19 596 587 120.0
A 9 143 85072 704.32 596 587 120.0
A 15 222 39165 321.61 596 587 120.0
B 5 172 426882 3814.48 582 567 111.8
B 10 246 87947 781.84 582 567 111.8
B 4 232 48426 428.22 582 567 111.8
C 15 214 224858 1694.86 569 574 132.3
C 0 10 111311 836.81 569 574 132.3
C 0 207 10138 72.27 569 574 132.3
D 10 199 217756 1578.78 568 555 137.6
D 1 52 217111 1574.1 568 555 137.6
D 2 249 194098 1406.82 568 555 137.6

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