ASTROSAT CZTI

Data Quality Report

Orbit 13795

Creation date: 2024-06-27T16:46:12.934466
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_199T01_9000002040_13795cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13795cztM0_level2_quad_clean.evt
Size (bytes)485,876,16064,532,160
Size463.4 MB 61.5 MB
Events in quadrant A3,854,039380,573
Events in quadrant B3,412,493389,998
Events in quadrant C3,184,412376,107
Events in quadrant D3,828,079359,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153883
B0138472
C0133462
D0155372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423751.167679%
B6423871.354507%
C6423200.311381%
D6423801.245524%

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 7689 6425 11 11 0.14% 0.17%
B 7689 6425 6 6 0.08% 0.09%
C 7689 6425 1 1 0.01% 0.02%
D 7689 6425 42 42 0.55% 0.65%

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 8 15 582728 3488.62 824 808 166.8
A 9 143 64248 380.32 824 808 166.8
A 1 162 23639 136.87 824 808 166.8
B 15 222 53599 337.75 829 811 156.3
B 0 214 45985 289.04 829 811 156.3
B 0 219 38045 238.24 829 811 156.3
C 3 233 65396 350.67 795 800 184.2
C 14 234 19725 102.74 795 800 184.2
C 13 61 5691 26.55 795 800 184.2
D 1 52 492382 2614.78 784 766 188.0
D 10 157 257110 1363.43 784 766 188.0
D 13 249 73771 388.3 784 766 188.0

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