ASTROSAT CZTI

Data Quality Report

Orbit 04925

Creation date: 2024-06-27T14:48:55.629245
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/AS1G05_118T01_9000000622_04925cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04925cztM0_level2_quad_clean.evt
Size (bytes)599,901,12085,570,560
Size572.1 MB 81.6 MB
Events in quadrant A4,525,368526,944
Events in quadrant B3,450,287534,386
Events in quadrant C3,186,015530,347
Events in quadrant D6,505,773485,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185473
B0154502
C0150002
D0246522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73714836.552707%
B7371741.003934%
C7371340.461267%
D737199313.471713%

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 7596 7371 268 268 3.53% 3.64%
B 7596 7374 4 4 0.05% 0.05%
C 7596 7373 0 0 0.00% 0.00%
D 7596 7374 926 926 12.19% 12.56%

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 31 1388848 8448.21 807 787 164.3
A 15 31 14558 83.82 807 787 164.3
A 12 194 8141 44.76 807 787 164.3
B 8 3 53122 327.43 837 816 159.7
B 0 219 41486 254.59 837 816 159.7
B 0 183 22917 138.35 837 816 159.7
C 1 16 28215 148.14 801 805 185.0
C 9 247 15200 77.8 801 805 185.0
C 13 61 6617 31.41 801 805 185.0
D 1 7 2506974 13267.07 769 745 188.9
D 2 33 551275 2914.31 769 745 188.9
D 2 136 149086 785.26 769 745 188.9

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