ASTROSAT CZTI

Data Quality Report

Orbit 16364

Creation date: 2024-06-27T17:21:35.874257
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/AS1A05_069T03_9000002416_16364cztM0_level2.evt modeM0/AS1A05_069T03_9000002416_16364cztM0_level2_quad_clean.evt
Size (bytes)1,438,464,960236,684,160
Size1.3 GB 225.7 MB
Events in quadrant A13,064,6891,448,777
Events in quadrant B9,792,6331,534,974
Events in quadrant C9,961,7471,466,323
Events in quadrant D9,487,5501,435,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516364
B0410253
C0416843
D0414283

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1861617349.314568%
B186162591.391276%
C186161961.052858%
D186164172.240009%

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 20357 18620 1171 1171 5.75% 6.29%
B 20357 18619 67 67 0.33% 0.36%
C 20357 18620 0 0 0.00% 0.00%
D 20357 18620 256 256 1.26% 1.37%

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 15 174 4827192 11230.24 2132 2084 429.7
A 9 143 24576 52.35 2132 2084 429.7
A 0 226 18507 38.22 2132 2084 429.7
B 0 189 283304 671.42 2211 2154 418.7
B 10 16 270308 640.39 2211 2154 418.7
B 15 35 171788 405.11 2211 2154 418.7
C 3 233 1345594 2710.19 2124 2138 495.7
C 14 238 324971 651.26 2124 2138 495.7
C 13 61 14845 25.63 2124 2138 495.7
D 10 70 595836 1060.3 2127 2076 560.0
D 12 110 277789 492.35 2127 2076 560.0
D 1 52 232572 411.6 2127 2076 560.0

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