ASTROSAT CZTI

Data Quality Report

Orbit 31933

Creation date: 2024-06-27T20:34:16.560856
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_123T09_9000004654_31933cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31933cztM0_level2_quad_clean.evt
Size (bytes)1,052,328,960126,976,320
Size1003.6 MB 121.1 MB
Events in quadrant A4,571,122842,410
Events in quadrant B7,352,743822,569
Events in quadrant C7,082,107782,698
Events in quadrant D12,226,362740,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195231
B0291531
C0275631
D0428641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9469320.337945%
B94701131.193242%
C94704064.287223%
D9470258527.296727%

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 10294 9470 4 4 0.04% 0.04%
B 10295 9471 39 39 0.38% 0.41%
C 10295 9471 99 99 0.96% 1.05%
D 10295 9471 2518 2518 24.46% 26.59%

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 12 96 192847 849.15 1128 1103 225.8
A 13 6 20602 86.35 1128 1103 225.8
A 13 254 17758 73.76 1128 1103 225.8
B 6 159 2623267 12492.16 1106 1077 209.9
B 4 80 157402 744.73 1106 1077 209.9
B 5 172 91308 429.86 1106 1077 209.9
C 3 233 2329203 9393.49 1059 1066 247.8
C 0 10 324739 1305.95 1059 1066 247.8
C 14 238 207649 833.51 1059 1066 247.8
D 12 33 6632095 28784.42 956 931 230.4
D 8 195 882524 3826.8 956 931 230.4
D 12 218 487274 2111.11 956 931 230.4

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