ASTROSAT CZTI

Data Quality Report

Orbit 30632

Creation date: 2024-06-27T20:17:56.402412
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_055T01_9000004414_30632cztM0_level2.evt modeM0/AS1A10_055T01_9000004414_30632cztM0_level2_quad_clean.evt
Size (bytes)662,463,360107,328,960
Size631.8 MB 102.4 MB
Events in quadrant A3,454,044731,299
Events in quadrant B5,339,439725,418
Events in quadrant C3,732,827686,423
Events in quadrant D7,078,892635,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143342
B0207372
C0153352
D0258784

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776981.446281%
B67761802.656434%
C67763264.811098%
D677571810.597786%

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 7526 6777 1 1 0.01% 0.01%
B 7526 6777 21 21 0.28% 0.31%
C 7526 6777 22 22 0.29% 0.32%
D 7525 6776 751 751 9.98% 11.08%

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 65789 370.91 875 859 175.1
A 13 254 12926 68.93 875 859 175.1
A 8 192 10805 56.82 875 859 175.1
B 6 159 1847380 11267.33 859 840 163.9
B 6 36 61790 371.91 859 840 163.9
B 12 111 19811 115.76 859 840 163.9
C 10 22 194107 1020.09 814 820 189.5
C 14 238 180514 948.36 814 820 189.5
C 14 254 65862 343.27 814 820 189.5
D 8 195 2777893 14565.61 813 794 190.7
D 13 249 742286 3889.05 813 794 190.7
D 12 218 234671 1226.66 813 794 190.7

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