ASTROSAT CZTI

Data Quality Report

Orbit 13313

Creation date: 2024-06-27T16:39:05.440986
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/AS1G08_023T01_9000001978_13313cztM0_level2.evt modeM0/AS1G08_023T01_9000001978_13313cztM0_level2_quad_clean.evt
Size (bytes)1,735,467,840328,429,440
Size1.6 GB 313.2 MB
Events in quadrant A13,232,3782,043,488
Events in quadrant B13,170,0132,086,722
Events in quadrant C11,719,0052,055,390
Events in quadrant D12,666,9771,960,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570344
B0562794
C0533474
D0561114

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05340
B05340
C05340
D05340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261834271.630829%
B261834231.615552%
C261832250.859336%
D261833881.481878%

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 28974 26188 163 163 0.56% 0.62%
B 28974 26188 105 105 0.36% 0.40%
C 28974 26188 3 3 0.01% 0.01%
D 28974 26188 149 149 0.51% 0.57%

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 8 15 1233517 1992.01 3053 2983 617.7
A 1 162 107948 169.92 3053 2983 617.7
A 9 143 62835 96.89 3053 2983 617.7
B 3 64 699969 1211.59 3068 2994 575.3
B 0 197 151713 258.52 3068 2994 575.3
B 0 230 98915 166.74 3068 2994 575.3
C 6 96 30382 39.7 2991 3007 689.6
C 13 61 21908 27.41 2991 3007 689.6
C 8 128 14008 15.95 2991 3007 689.6
D 8 195 544090 760.25 2961 2870 711.9
D 13 122 357066 497.54 2961 2870 711.9
D 5 222 331067 461.02 2961 2870 711.9

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