ASTROSAT CZTI

Data Quality Report

Orbit 18477

Creation date: 2024-06-27T17:50:32.877059
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/AS1A05_082T12_9000002738_18477cztM0_level2.evt modeM0/AS1A05_082T12_9000002738_18477cztM0_level2_quad_clean.evt
Size (bytes)634,593,600100,941,120
Size605.2 MB 96.3 MB
Events in quadrant A4,200,629615,410
Events in quadrant B5,111,054626,173
Events in quadrant C4,965,133605,446
Events in quadrant D4,348,048601,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180852
B0207617
C0202902
D0187442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87621361.552157%
B87613363.835179%
C87611802.054560%
D87611301.483849%

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 10027 8762 1 1 0.01% 0.01%
B 10025 8760 141 141 1.41% 1.61%
C 10026 8761 0 0 0.00% 0.00%
D 10026 8761 17 17 0.17% 0.19%

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 15 174 67378 303.44 1070 1046 218.6
A 4 2 10431 42.93 1070 1046 218.6
A 0 226 9430 38.35 1070 1046 218.6
B 10 245 647368 3124.06 1062 1030 206.9
B 12 18 132044 633.25 1062 1030 206.9
B 15 222 81633 389.59 1062 1030 206.9
C 3 233 786129 3216.11 1030 1034 244.1
C 14 238 158423 644.74 1030 1034 244.1
C 13 61 7220 25.34 1030 1034 244.1
D 7 38 131484 509.34 1049 1020 256.1
D 1 52 86607 334.14 1049 1020 256.1
D 13 168 45668 174.31 1049 1020 256.1

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