ASTROSAT CZTI

Data Quality Report

Orbit 23309

Creation date: 2024-06-27T18:52:39.032513
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/AS1A07_148T02_9000003444_23309cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23309cztM0_level2_quad_clean.evt
Size (bytes)524,499,84091,595,520
Size500.2 MB 87.4 MB
Events in quadrant A3,753,436570,938
Events in quadrant B3,779,665575,151
Events in quadrant C3,731,472556,987
Events in quadrant D4,111,215549,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01531
C01542
D01542

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016341185
B016183195
C016016170
D017496169

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7497811.080432%
B74951411.881254%
C74971542.054155%
D75001341.786667%

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 8524 7503 1 1 0.01% 0.01%
B 8524 7501 4 4 0.05% 0.05%
C 8523 7504 0 0 0.00% 0.00%
D 8524 7505 73 73 0.86% 0.97%

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 6 16 135647 707.21 937 917 190.5
A 13 254 12033 58.35 937 917 190.5
A 3 137 8414 39.35 937 917 190.5
B 0 230 53138 289.99 932 908 180.1
B 4 173 30729 165.57 932 908 180.1
B 12 111 22371 119.17 932 908 180.1
C 14 238 142437 670.75 898 904 211.0
C 10 9 58983 275.25 898 904 211.0
C 7 247 17708 79.64 898 904 211.0
D 1 52 340224 1511.0 906 879 224.6
D 7 238 246154 1092.13 906 879 224.6
D 12 233 40231 175.22 906 879 224.6

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