ASTROSAT CZTI

Data Quality Report

Orbit 20671

Creation date: 2024-06-27T18:18:11.795485
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/AS1A05_229T02_9000003060_20671cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20671cztM0_level2_quad_clean.evt
Size (bytes)533,954,880113,921,280
Size509.2 MB 108.6 MB
Events in quadrant A3,520,773779,640
Events in quadrant B3,715,947775,445
Events in quadrant C3,390,190743,101
Events in quadrant D5,096,637692,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146542
B0153812
C0142712
D0195812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592941.425971%
B65921211.835558%
C6592981.486650%
D659272911.058859%

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 7802 6593 24 24 0.31% 0.36%
B 7802 6593 35 35 0.45% 0.53%
C 7802 6593 0 0 0.00% 0.00%
D 7802 6593 573 573 7.34% 8.69%

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 5 16 111063 628.71 867 854 175.3
A 12 16 42937 240.07 867 854 175.3
A 9 143 18099 98.38 867 854 175.3
B 7 220 226222 1389.21 852 834 162.2
B 0 190 58124 353.11 852 834 162.2
B 4 216 43277 261.6 852 834 162.2
C 14 238 130144 687.64 813 819 188.1
C 8 208 56187 294.4 813 819 188.1
C 7 247 30389 157.23 813 819 188.1
D 1 20 1663235 8493.51 806 787 195.7
D 7 38 130851 664.5 806 787 195.7
D 13 153 110564 560.85 806 787 195.7

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