ASTROSAT CZTI

Data Quality Report

Orbit 05675

Creation date: 2024-06-27T14:57:51.213323
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/AS1A02_077T01_9000000732_05675cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05675cztM0_level2_quad_clean.evt
Size (bytes)802,751,040149,313,600
Size765.6 MB 142.4 MB
Events in quadrant A5,409,428948,691
Events in quadrant B6,716,779942,601
Events in quadrant C5,453,099940,499
Events in quadrant D5,966,066907,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236127
B0274402
C0239038
D0250802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113061711.512471%
B113082392.113548%
C113051030.911101%
D113081791.582950%

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 13628 11310 6 6 0.04% 0.05%
B 13628 11310 63 63 0.46% 0.56%
C 13628 11310 1 1 0.01% 0.01%
D 13628 11310 50 50 0.37% 0.44%

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 50 33362 114.49 1377 1350 279.6
A 13 6 23165 78.02 1377 1350 279.6
A 4 2 20859 69.77 1377 1350 279.6
B 5 172 411324 1569.89 1373 1342 261.2
B 15 204 377943 1442.07 1373 1342 261.2
B 0 214 287522 1095.83 1373 1342 261.2
C 1 16 316894 1041.24 1311 1319 303.1
C 13 61 10778 31.21 1311 1319 303.1
C 10 34 8966 25.23 1311 1319 303.1
D 2 152 345418 1055.95 1326 1285 325.9
D 8 195 212304 647.5 1326 1285 325.9
D 10 15 97575 295.46 1326 1285 325.9

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