ASTROSAT CZTI

Data Quality Report

Orbit 35613

Creation date: 2022-05-02T10:51:11.399808
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_065T04_9000005098_35613cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35613cztM0_level2_quad_clean.evt
Size (bytes)994,590,72084,761,280
Size948.5 MB 80.8 MB
Events in quadrant A4,820,531514,888
Events in quadrant B5,416,723515,561
Events in quadrant C5,340,941504,193
Events in quadrant D13,904,393375,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202863
B0222852
C0213902
D0477536

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9458320.338338%
B94582762.918165%
C94581531.617678%
D9457353537.379719%

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 12986 9460 13 13 0.10% 0.14%
B 12986 9460 168 168 1.29% 1.78%
C 12986 9460 116 116 0.89% 1.23%
D 12985 9459 2942 2942 22.66% 31.10%

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 15 169 339665 1545.91 1097 1076 219.0
A 10 83 189788 861.61 1097 1076 219.0
A 13 6 17375 74.42 1097 1076 219.0
B 5 172 923201 4385.51 1081 1052 210.3
B 4 81 121183 571.31 1081 1052 210.3
B 5 200 39208 181.46 1081 1052 210.3
C 0 10 539251 2193.88 1059 1068 245.3
C 15 214 385263 1566.16 1059 1068 245.3
C 1 23 193918 786.15 1059 1068 245.3
D 7 80 8472047 40418.4 854 830 209.6
D 12 233 1623807 7743.65 854 830 209.6
D 2 249 126501 599.61 854 830 209.6

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