ASTROSAT CZTI

Data Quality Report

Orbit 27892

Creation date: 2024-06-27T19:45:40.187818
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/AS1A10_048T01_9000004028_27892cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27892cztM0_level2_quad_clean.evt
Size (bytes)485,614,080106,272,000
Size463.1 MB 101.3 MB
Events in quadrant A3,345,931724,594
Events in quadrant B3,478,640729,342
Events in quadrant C3,367,261675,660
Events in quadrant D4,104,118666,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139470
B0144610
C0140090
D0163000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60581051.733245%
B60591322.178577%
C60591602.640700%
D60591702.805744%

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 7318 6058 0 0 0.00% 0.00%
B 7319 6059 5 5 0.07% 0.08%
C 7319 6059 0 0 0.00% 0.00%
D 7319 6059 82 82 1.12% 1.35%

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 13 254 9415 50.06 867 856 171.0
A 3 137 7518 38.96 867 856 171.0
A 0 226 7483 38.76 867 856 171.0
B 0 230 79430 496.02 852 839 158.4
B 10 245 40934 253.06 852 839 158.4
B 12 111 18662 112.49 852 839 158.4
C 14 238 133755 714.51 807 813 186.1
C 3 233 69417 368.72 807 813 186.1
C 2 16 23219 120.42 807 813 186.1
D 1 52 638558 3330.4 820 800 191.5
D 13 104 247922 1290.48 820 800 191.5
D 7 238 99033 512.98 820 800 191.5

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