ASTROSAT CZTI

Data Quality Report

Orbit 35698

Creation date: 2022-05-10T15:22:37.199481
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_142T02_9000005112_35698cztM0_level2.evt modeM0/AS1A09_142T02_9000005112_35698cztM0_level2_quad_clean.evt
Size (bytes)94,798,08027,000,000
Size90.4 MB 25.7 MB
Events in quadrant A660,941181,904
Events in quadrant B685,929183,673
Events in quadrant C778,800178,842
Events in quadrant D653,658174,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027771
B028541
C030471
D027291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130410.076687%
B1304151.150307%
C1304503.834356%
D130420.153374%

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 1304 1304 0 0 0.00% 0.00%
B 1304 1304 13 13 1.00% 1.00%
C 1304 1304 35 35 2.68% 2.68%
D 1304 1304 1 1 0.08% 0.08%

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 10 83 56660 1698.18 155 152 33.3
A 13 6 3328 95.45 155 152 33.3
A 10 67 2041 56.77 155 152 33.3
B 5 172 59290 1889.15 154 150 31.3
B 0 190 7842 245.71 154 150 31.3
B 12 111 3392 103.56 154 150 31.3
C 0 10 127815 3463.93 152 152 36.9
C 15 214 57221 1548.48 152 152 36.9
C 13 61 958 21.87 152 152 36.9
D 2 250 20549 526.13 153 149 38.8
D 10 118 13409 341.98 153 149 38.8
D 8 195 10330 262.57 153 149 38.8

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