ASTROSAT CZTI

Data Quality Report

Orbit 24626

Creation date: 2024-06-27T19:08:04.506750
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/AS1T03_189T01_9000003614_24626cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24626cztM0_level2_quad_clean.evt
Size (bytes)574,073,280118,454,400
Size547.5 MB 113.0 MB
Events in quadrant A3,969,065768,711
Events in quadrant B4,285,214771,990
Events in quadrant C4,635,759742,448
Events in quadrant D3,944,773739,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171493
B0179353
C0191263
D0172713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8113861.060027%
B81141992.452551%
C81142903.574070%
D8114510.628543%

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 8758 8116 0 0 0.00% 0.00%
B 8759 8117 26 26 0.30% 0.32%
C 8759 8117 27 27 0.31% 0.33%
D 8759 8117 6 6 0.07% 0.07%

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 12700 57.02 1025 1002 205.2
A 6 16 10116 44.42 1025 1002 205.2
A 3 137 10002 43.87 1025 1002 205.2
B 3 64 293694 1487.36 1010 981 196.8
B 12 111 24624 120.14 1010 981 196.8
B 4 216 23444 114.14 1010 981 196.8
C 7 247 384187 1647.88 984 992 232.5
C 9 54 223745 957.92 984 992 232.5
C 14 238 155075 662.61 984 992 232.5
D 8 195 78087 314.71 1004 976 245.0
D 2 234 40130 159.8 1004 976 245.0
D 1 52 20254 78.68 1004 976 245.0

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