ASTROSAT CZTI

Data Quality Report

Orbit 23544

Creation date: 2024-06-27T18:55:57.373146
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/AS1A07_011T01_9000003482_23544cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23544cztM0_level2_quad_clean.evt
Size (bytes)1,292,261,760230,541,120
Size1.2 GB 219.9 MB
Events in quadrant A8,104,4881,477,600
Events in quadrant B9,322,2411,488,858
Events in quadrant C8,280,8571,445,011
Events in quadrant D12,243,3251,361,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0201
C0201
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03688
B03675
C036911
D03664

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036596817
B040021894
C036861811
D0497891182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175271260.718891%
B175143161.804271%
C175312531.443158%
D1752012767.283105%

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 20359 17562 2 2 0.01% 0.01%
B 20359 17555 111 111 0.55% 0.63%
C 20359 17558 3 3 0.01% 0.02%
D 20359 17555 1082 1082 5.31% 6.16%

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 13 254 32044 71.38 2093 2045 420.3
A 3 137 19078 40.53 2093 2045 420.3
A 0 226 17961 37.87 2093 2045 420.3
B 3 64 483716 1222.83 2071 2020 393.9
B 0 189 377781 953.91 2071 2020 393.9
B 0 229 152602 382.27 2071 2020 393.9
C 14 238 316743 675.61 2001 2016 465.8
C 7 247 79269 165.84 2001 2016 465.8
C 10 9 49793 102.56 2001 2016 465.8
D 1 52 3859139 8044.97 1973 1918 479.5
D 7 38 524806 1090.58 1973 1918 479.5
D 2 234 78216 159.13 1973 1918 479.5

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