ASTROSAT CZTI

Data Quality Report

Orbit 24553

Creation date: 2024-06-27T19:07:11.902623
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/AS1T03_187T01_9000003608_24553cztM0_level2.evt modeM0/AS1T03_187T01_9000003608_24553cztM0_level2_quad_clean.evt
Size (bytes)609,788,160116,755,200
Size581.5 MB 111.3 MB
Events in quadrant A3,602,008779,441
Events in quadrant B3,652,680784,043
Events in quadrant C3,602,030739,507
Events in quadrant D7,094,121702,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157252
B0158082
C0156862
D0263862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7618740.971384%
B76191091.430634%
C76191211.588135%
D76196218.150676%

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 8638 7620 0 0 0.00% 0.00%
B 8639 7621 4 4 0.05% 0.05%
C 8639 7621 0 0 0.00% 0.00%
D 8639 7621 385 385 4.46% 5.05%

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 11943 59.11 930 908 186.7
A 10 255 10753 52.73 930 908 186.7
A 3 137 8517 40.76 930 908 186.7
B 12 111 21675 118.59 922 901 175.2
B 11 111 19206 104.49 922 901 175.2
B 14 111 17213 93.11 922 901 175.2
C 14 238 141270 689.28 878 880 203.7
C 2 16 18014 84.12 878 880 203.7
C 3 233 13482 61.87 878 880 203.7
D 8 195 2745409 12794.81 874 843 214.5
D 1 52 542840 2526.72 874 843 214.5
D 1 255 221717 1029.69 874 843 214.5

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