ASTROSAT CZTI

Data Quality Report

Orbit 12731

Creation date: 2024-06-27T16:31:42.696967
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_9000001880_12731cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12731cztM0_level2_quad_clean.evt
Size (bytes)1,347,629,760266,621,760
Size1.3 GB 254.3 MB
Events in quadrant A8,627,0861,722,624
Events in quadrant B11,152,0241,696,109
Events in quadrant C8,283,8801,713,661
Events in quadrant D11,472,0371,640,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387315
B0456654
C0383224
D0473344

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189062171.147784%
B1890610485.543214%
C189061850.978525%
D189067023.713107%

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 21232 18913 26 26 0.12% 0.14%
B 21232 18913 553 553 2.60% 2.92%
C 21232 18913 3 3 0.01% 0.02%
D 21232 18913 502 502 2.36% 2.65%

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 15 239 150732 337.36 2170 2119 440.5
A 12 189 121570 271.16 2170 2119 440.5
A 0 226 19438 39.31 2170 2119 440.5
B 4 239 2470412 6182.87 2127 2072 399.2
B 0 214 105038 257.92 2127 2072 399.2
B 3 64 81004 197.71 2127 2072 399.2
C 13 61 15324 27.04 2117 2130 488.0
C 14 234 14365 25.07 2117 2130 488.0
C 15 208 9910 15.94 2117 2130 488.0
D 1 52 2070978 4231.57 2075 2023 488.9
D 10 199 701988 1431.62 2075 2023 488.9
D 2 136 384878 783.04 2075 2023 488.9

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