ASTROSAT CZTI

Data Quality Report

Orbit 15916

Creation date: 2024-06-27T17:15:06.026831
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/AS1A04_143T01_9000002344_15916cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15916cztM0_level2_quad_clean.evt
Size (bytes)2,567,750,400396,357,120
Size2.4 GB 378.0 MB
Events in quadrant A23,991,3522,373,452
Events in quadrant B17,874,3432,506,759
Events in quadrant C16,873,3392,384,490
Events in quadrant D16,679,0822,350,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07040
B07040
C07040
D07040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0941036
B0752095
C0718585
D0734275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3476923356.715753%
B347698732.510857%
C347697542.168598%
D347697242.082315%

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 37460 34772 1005 1005 2.68% 2.89%
B 37460 34772 133 133 0.36% 0.38%
C 37460 34772 4 4 0.01% 0.01%
D 37460 34771 149 149 0.40% 0.43%

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 15 239 8063031 9757.2 4110 4014 826.0
A 9 143 92113 106.66 4110 4014 826.0
A 15 157 37047 39.99 4110 4014 826.0
B 4 142 400031 490.06 4213 4102 807.9
B 4 216 257174 313.24 4213 4102 807.9
B 0 229 232694 282.94 4213 4102 807.9
C 14 238 616069 643.95 4054 4073 950.4
C 3 233 331152 344.16 4054 4073 950.4
C 0 207 60773 59.66 4054 4073 950.4
D 10 70 407625 400.71 4128 4010 1007.2
D 13 172 244278 238.54 4128 4010 1007.2
D 1 52 191978 186.61 4128 4010 1007.2

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