ASTROSAT CZTI

Data Quality Report

Orbit 07752

Creation date: 2024-06-27T15:23:32.262526
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/AS1G06_064T01_9000001066_07752cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07752cztM0_level2_quad_clean.evt
Size (bytes)791,521,920162,720,000
Size754.9 MB 155.2 MB
Events in quadrant A5,574,1691,051,104
Events in quadrant B5,721,8251,061,556
Events in quadrant C5,165,9611,034,833
Events in quadrant D6,714,754969,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246603
B0250002
C0236842
D0286152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117331531.304014%
B11733950.809682%
C11733280.238643%
D117334423.767152%

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 13238 11734 67 67 0.51% 0.57%
B 13238 11733 10 10 0.08% 0.09%
C 13238 11735 0 0 0.00% 0.00%
D 13238 11735 403 403 3.04% 3.43%

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 0 128 312029 1133.35 1351 1322 274.1
A 15 239 31268 109.23 1351 1322 274.1
A 0 226 13018 42.66 1351 1322 274.1
B 4 239 97655 368.69 1370 1337 261.2
B 0 229 95962 362.21 1370 1337 261.2
B 15 204 74024 278.23 1370 1337 261.2
C 12 4 10613 30.4 1319 1327 305.4
C 13 61 10207 29.07 1319 1327 305.4
C 8 222 6844 18.06 1319 1327 305.4
D 12 221 1366324 4291.28 1295 1255 318.1
D 2 16 203324 635.23 1295 1255 318.1
D 13 137 47606 145.71 1295 1255 318.1

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