ASTROSAT CZTI

Data Quality Report

Orbit 16968

Creation date: 2024-06-27T17:30:11.422365
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_188T01_9000002520_16968cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16968cztM0_level2_quad_clean.evt
Size (bytes)791,605,44087,747,840
Size754.9 MB 83.7 MB
Events in quadrant A3,802,133545,567
Events in quadrant B4,609,625549,759
Events in quadrant C4,215,448535,549
Events in quadrant D10,806,333469,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167233
B0187503
C0174604
D0376663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79852683.356293%
B79853454.320601%
C79842933.669840%
D7984196324.586673%

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 8141 7988 0 0 0.00% 0.00%
B 8141 7988 14 14 0.17% 0.18%
C 8140 7987 0 0 0.00% 0.00%
D 8140 7986 1392 1392 17.10% 17.43%

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 12 189 9684 43.38 986 962 201.1
A 0 226 8797 38.96 986 962 201.1
A 12 194 7278 31.41 986 962 201.1
B 3 64 216132 1118.61 982 954 192.4
B 7 220 128948 665.38 982 954 192.4
B 15 35 123506 637.09 982 954 192.4
C 3 233 346699 1539.79 952 958 224.5
C 14 238 143830 636.29 952 958 224.5
C 0 207 11126 45.28 952 958 224.5
D 1 52 7262988 33876.52 880 853 214.4
D 15 145 59029 271.38 880 853 214.4
D 10 70 39909 182.19 880 853 214.4

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