ASTROSAT CZTI

Data Quality Report

Orbit 30507

Creation date: 2024-06-27T20:16:11.949517
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/AS1C05_019T04_9000004388_30507cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30507cztM0_level2_quad_clean.evt
Size (bytes)1,580,258,880290,036,160
Size1.5 GB 276.6 MB
Events in quadrant A8,881,5571,922,945
Events in quadrant B14,985,0781,902,637
Events in quadrant C9,551,7521,856,644
Events in quadrant D13,166,2991,800,446

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390304
B0587484
C0406734
D0522144

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188951941.026727%
B188965362.836579%
C188953321.757079%
D1889510915.774014%

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 20910 18899 9 9 0.04% 0.05%
B 20911 18900 110 110 0.53% 0.58%
C 20910 18899 1 1 0.00% 0.01%
D 20910 18899 886 886 4.24% 4.69%

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 12 96 170925 378.27 2233 2185 446.1
A 8 192 58215 125.61 2233 2185 446.1
A 13 254 33976 71.27 2233 2185 446.1
B 6 159 5349798 12881.42 2204 2145 415.1
B 0 229 740225 1777.89 2204 2145 415.1
B 5 172 99567 234.67 2204 2145 415.1
C 3 233 650186 1304.25 2145 2155 496.9
C 14 238 361667 723.57 2145 2155 496.9
C 10 22 88415 173.61 2145 2155 496.9
D 8 195 1995217 3988.72 2121 2065 499.7
D 2 250 1216513 2430.36 2121 2065 499.7
D 12 218 901553 1800.06 2121 2065 499.7

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