ASTROSAT CZTI

Data Quality Report

Orbit 30284

Creation date: 2024-06-27T20:13:06.465858
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_007T01_9000004350_30284cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30284cztM0_level2_quad_clean.evt
Size (bytes)646,704,000103,976,640
Size616.7 MB 99.2 MB
Events in quadrant A3,696,805672,146
Events in quadrant B5,589,672684,119
Events in quadrant C4,058,512666,733
Events in quadrant D5,763,509634,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152853
B0217922
C0163472
D0220442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70591221.728290%
B70591912.705766%
C70602723.852691%
D70604446.288952%

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 9294 7062 19 19 0.20% 0.27%
B 9294 7062 9 9 0.10% 0.13%
C 9295 7062 8 8 0.09% 0.11%
D 9295 7061 294 294 3.16% 4.16%

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 13 195200 1075.06 902 884 180.7
A 8 192 21644 114.86 902 884 180.7
A 13 254 11902 60.96 902 884 180.7
B 6 159 1943519 11280.99 891 867 172.2
B 0 229 74359 426.77 891 867 172.2
B 4 173 66548 381.41 891 867 172.2
C 3 233 407234 1987.76 871 879 204.4
C 14 238 168271 818.83 871 879 204.4
C 14 254 40208 192.38 871 879 204.4
D 8 195 1039239 5009.03 858 839 207.3
D 1 52 895228 4314.35 858 839 207.3
D 2 250 526838 2537.31 858 839 207.3

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