ASTROSAT CZTI

Data Quality Report

Orbit 00569

Creation date: 2024-06-27T14:00:04.347780
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/AS1P01_014T06_9000000078_00569cztM0_level2.evt modeM0/AS1P01_014T06_9000000078_00569cztM0_level2_quad_clean.evt
Size (bytes)694,707,84050,091,840
Size662.5 MB 47.8 MB
Events in quadrant A5,101,670303,737
Events in quadrant B4,791,688289,595
Events in quadrant C4,412,786301,410
Events in quadrant D6,457,945330,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180861
B0171881
C0160251
D0221311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41341593.846154%
B413440.096759%
C413420.048379%
D41342235.394291%

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 6291 4135 230 230 3.66% 5.56%
B 6291 4135 46 46 0.73% 1.11%
C 6291 4135 27 27 0.43% 0.65%
D 6291 4135 836 836 13.29% 20.22%

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 0 149 428246 1619.67 1187 1177 263.7
A 0 238 55618 206.47 1187 1177 263.7
A 0 5 11130 37.75 1187 1177 263.7
B 4 250 79179 274.44 1202 1209 284.1
B 8 4 23039 76.84 1202 1209 284.1
B 4 206 18058 59.3 1202 1209 284.1
C 5 249 57649 182.21 1104 1147 310.1
C 15 241 10710 30.84 1104 1147 310.1
C 7 159 4309 10.2 1104 1147 310.1
D 12 237 786514 2347.89 1064 1104 334.5
D 13 216 738770 2205.16 1064 1104 334.5
D 1 4 263504 784.41 1064 1104 334.5

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