ASTROSAT CZTI

Data Quality Report

Orbit 16760

Creation date: 2024-06-27T17:27:32.867396
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/AS1T03_015T01_9000002486_16760cztM0_level2.evt modeM0/AS1T03_015T01_9000002486_16760cztM0_level2_quad_clean.evt
Size (bytes)331,260,48055,923,840
Size315.9 MB 53.3 MB
Events in quadrant A1,484,937415,643
Events in quadrant B1,692,692410,104
Events in quadrant C1,588,835386,906
Events in quadrant D5,069,021274,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060994
B0673613
C066056
D01710640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0582
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2881120.416522%
B2879341.180966%
C2881130.451232%
D2876152352.955494%

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 2884 2884 8 8 0.28% 0.28%
B 2884 2884 25 25 0.87% 0.87%
C 2884 2884 0 0 0.00% 0.00%
D 2884 2884 1065 1065 36.93% 36.93%

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 15 174 87621 1193.21 361 353 73.1
A 14 4 9272 121.95 361 353 73.1
A 0 226 3262 39.77 361 353 73.1
B 15 35 82626 1247.26 350 342 66.0
B 0 189 68055 1026.39 350 342 66.0
B 7 220 59250 892.93 350 342 66.0
C 3 233 191376 2434.67 337 340 78.5
C 14 238 54399 688.96 337 340 78.5
C 0 207 22582 283.46 337 340 78.5
D 1 52 2477201 38524.24 263 255 64.3
D 13 232 1414596 21997.42 263 255 64.3
D 2 33 79474 1232.1 263 255 64.3

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