ASTROSAT CZTI

Data Quality Report

Orbit 20180203_G08_021T01_9000001880_level2

Creation date: 2025-01-04T16:06:16.521934
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/AS1G08_021T01_9000001880cztM0_level2.fits modeM0/AS1G08_021T01_9000001880cztM0_level2_quad_clean.evt
Size (bytes)656,210,880755,225,280
Size625.8 MB 720.2 MB
Events in quadrant A3,980,8084,777,488
Events in quadrant B3,700,1044,475,719
Events in quadrant C3,911,4444,560,400
Events in quadrant D3,327,6204,110,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01556720
B01902130
C01468570
D01955050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014660
B014660
C014660
D014660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7218511511.594514%
B7218557137.914387%
C721855500.761931%
D7218533604.654707%

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 115064 72180 0 0 0.00% 0.00%
B 115064 71740 0 0 0.00% 0.00%
C 115063 72180 0 0 0.00% 0.00%
D 115063 72160 0 0 0.00% 0.00%

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 0 29 3753 10.9 1038 974 255.1
A 9 19 2985 7.88 1038 974 255.1
A 0 30 2917 7.62 1038 974 255.1
B 2 9 3255 12.35 976 933 188.0
B 14 254 2488 8.27 976 933 188.0
B 5 128 2461 8.13 976 933 188.0
C 12 241 2795 6.83 1034 962 268.5
C 2 191 2723 6.56 1034 962 268.5
C 3 126 2591 6.07 1034 962 268.5
D 6 231 2485 6.42 948 862 252.7
D 3 14 2474 6.38 948 862 252.7
D 7 3 2325 5.79 948 862 252.7

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