ASTROSAT CZTI

Data Quality Report

Orbit 31212

Creation date: 2024-06-27T20:25:05.378506
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/AS1T04_019T01_9000004516_31212cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31212cztM0_level2_quad_clean.evt
Size (bytes)686,246,400109,319,040
Size654.5 MB 104.3 MB
Events in quadrant A3,783,800716,532
Events in quadrant B6,096,038708,027
Events in quadrant C4,080,656685,620
Events in quadrant D6,314,168676,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160482
B0231982
C0167862
D0243884

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75182222.952913%
B75184045.373770%
C75184155.520085%
D75172803.724890%

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 7778 7519 0 0 0.00% 0.00%
B 7778 7519 0 0 0.00% 0.00%
C 7778 7519 10 10 0.13% 0.13%
D 7777 7518 1 1 0.01% 0.01%

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 10600 48.92 981 960 197.1
A 3 137 10198 46.88 981 960 197.1
A 0 226 8103 36.25 981 960 197.1
B 6 159 2265306 12020.77 955 931 188.4
B 0 230 42412 220.21 955 931 188.4
B 0 190 27547 141.29 955 931 188.4
C 14 238 171549 762.12 940 949 223.9
C 10 22 159606 708.76 940 949 223.9
C 14 254 36238 157.65 940 949 223.9
D 8 195 2646817 11680.12 952 933 226.5
D 2 72 30129 128.88 952 933 226.5
D 2 234 27031 115.21 952 933 226.5

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