ASTROSAT CZTI

Data Quality Report

Orbit 27666

Creation date: 2024-06-27T19:42:47.080993
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_257T01_9000003976_27666cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27666cztM0_level2_quad_clean.evt
Size (bytes)716,184,00086,178,240
Size683.0 MB 82.2 MB
Events in quadrant A3,983,560532,928
Events in quadrant B4,335,060537,658
Events in quadrant C4,120,106517,980
Events in quadrant D8,696,699451,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171400
B0180430
C0173280
D0313660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81822883.519922%
B81834094.998167%
C81823394.143241%
D8182139117.000733%

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 8717 8182 0 0 0.00% 0.00%
B 8718 8183 43 43 0.49% 0.53%
C 8717 8182 0 0 0.00% 0.00%
D 8717 8182 1096 1096 12.57% 13.40%

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 13 254 13399 59.05 1028 1001 209.9
A 3 137 10264 44.12 1028 1001 209.9
A 15 174 10174 43.69 1028 1001 209.9
B 10 245 259290 1296.28 1022 993 199.3
B 0 230 38917 190.32 1022 993 199.3
B 12 111 25221 121.59 1022 993 199.3
C 14 238 155828 658.06 991 995 235.3
C 3 233 86781 364.6 991 995 235.3
C 2 16 11595 45.05 991 995 235.3
D 1 52 4966086 22001.69 942 914 225.7
D 2 250 82211 360.24 942 914 225.7
D 2 234 39872 172.63 942 914 225.7

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