ASTROSAT CZTI

Data Quality Report

Orbit 04350

Creation date: 2024-06-27T14:40:43.511748
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/AS1G05_219T01_9000000540_04350cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04350cztM0_level2_quad_clean.evt
Size (bytes)1,822,697,280150,603,840
Size1.7 GB 143.6 MB
Events in quadrant A7,712,555952,916
Events in quadrant B29,713,371656,672
Events in quadrant C8,204,200924,863
Events in quadrant D8,474,832901,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03393618
B0100028340
C03593432
D03693125

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162791310.804718%
B16237825550.840673%
C162752471.517665%
D162752621.609831%

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 17931 16286 30 30 0.17% 0.18%
B 17930 16258 7441 7441 41.50% 45.77%
C 17931 16287 163 163 0.91% 1.00%
D 17930 16285 209 209 1.17% 1.28%

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 13 115841 294.34 1890 1849 387.3
A 14 111 113440 288.14 1890 1849 387.3
A 13 251 88465 223.65 1890 1849 387.3
B 3 0 23455204 81359.35 1498 1462 288.3
B 14 167 231114 796.65 1498 1462 288.3
B 4 254 102228 349.55 1498 1462 288.3
C 9 247 774378 1827.48 1812 1824 422.7
C 9 16 204560 479.57 1812 1824 422.7
C 14 48 93834 217.65 1812 1824 422.7
D 2 37 533724 1209.13 1812 1758 440.0
D 2 136 450453 1019.86 1812 1758 440.0
D 13 53 173218 389.72 1812 1758 440.0

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