ASTROSAT CZTI

Data Quality Report

Orbit 11845

Creation date: 2024-06-27T16:19:04.829523
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/AS1A04_088T03_9000001750_11845cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11845cztM0_level2_quad_clean.evt
Size (bytes)582,641,28090,077,760
Size555.7 MB 85.9 MB
Events in quadrant A3,943,194560,815
Events in quadrant B5,508,815542,854
Events in quadrant C3,533,508552,958
Events in quadrant D4,130,153527,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166973
B0216032
C0161232
D0177342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78052783.561819%
B78056197.930814%
C78051852.370275%
D78053013.856502%

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 7946 7808 2 2 0.03% 0.03%
B 7946 7808 228 228 2.87% 2.92%
C 7946 7808 0 0 0.00% 0.00%
D 7946 7808 87 87 1.09% 1.11%

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 1 162 125261 641.2 942 920 193.9
A 1 178 63738 323.94 942 920 193.9
A 1 161 55760 282.8 942 920 193.9
B 4 239 566986 3222.09 921 899 175.7
B 3 64 556548 3162.68 921 899 175.7
B 15 204 386469 2194.61 921 899 175.7
C 13 61 6677 27.51 905 907 209.8
C 3 202 2323 6.75 905 907 209.8
C 12 4 2152 5.93 905 907 209.8
D 13 122 239425 1104.6 901 873 216.0
D 1 52 166807 768.34 901 873 216.0
D 13 104 103630 475.81 901 873 216.0

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