ASTROSAT CZTI

Data Quality Report

Orbit 21348

Creation date: 2024-06-27T18:26:52.017991
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_226T05_9000003148_21348cztM0_level2.evt modeM0/AS1A05_226T05_9000003148_21348cztM0_level2_quad_clean.evt
Size (bytes)486,037,440120,409,920
Size463.5 MB 114.8 MB
Events in quadrant A3,006,316852,639
Events in quadrant B3,382,881847,773
Events in quadrant C2,856,192810,058
Events in quadrant D5,073,252723,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124152
B0137411
C0121491
D0190351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906300.507958%
B59061212.048764%
C5906380.643413%
D5907110818.757406%

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 7131 5907 0 0 0.00% 0.00%
B 7131 5907 76 76 1.07% 1.29%
C 7131 5907 0 0 0.00% 0.00%
D 7132 5907 969 969 13.59% 16.40%

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 5 168 94290 630.04 746 732 148.5
A 11 47 13220 84.1 746 732 148.5
A 9 143 12315 78.0 746 732 148.5
B 6 36 373352 2753.91 728 711 135.3
B 3 64 64900 474.37 728 711 135.3
B 0 230 62020 453.09 728 711 135.3
C 14 238 113516 704.8 699 704 160.1
C 10 23 14679 87.31 699 704 160.1
C 13 61 5046 27.13 699 704 160.1
D 13 174 2172125 13874.11 655 637 156.5
D 1 52 312373 1991.75 655 637 156.5
D 7 38 37165 233.39 655 637 156.5

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