ASTROSAT CZTI

Data Quality Report

Orbit 26450

Creation date: 2024-06-27T19:29:10.148602
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/AS1A09_056T01_9000003824_26450cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26450cztM0_level2_quad_clean.evt
Size (bytes)598,492,800107,645,760
Size570.8 MB 102.7 MB
Events in quadrant A3,736,640686,719
Events in quadrant B3,782,959702,205
Events in quadrant C4,538,479664,311
Events in quadrant D5,533,498659,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163650
B0164030
C0185420
D0215030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78672192.783780%
B78682362.999492%
C78683894.944077%
D78684675.935435%

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 8377 7869 0 0 0.00% 0.00%
B 8378 7870 0 0 0.00% 0.00%
C 8378 7870 63 63 0.75% 0.80%
D 8378 7870 259 259 3.09% 3.29%

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 12 189 14829 71.91 962 938 193.2
A 13 254 11010 52.14 962 938 193.2
A 12 16 10390 48.93 962 938 193.2
B 12 111 23100 118.83 962 934 186.5
B 11 111 20670 105.81 962 934 186.5
B 14 111 18438 93.84 962 934 186.5
C 3 233 349162 1576.78 930 931 220.8
C 2 16 248727 1122.02 930 931 220.8
C 4 254 173146 779.79 930 931 220.8
D 1 52 825703 3764.66 926 904 219.1
D 7 80 589436 2686.25 926 904 219.1
D 11 176 530528 2417.38 926 904 219.1

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