ASTROSAT CZTI

Data Quality Report

Orbit 19740

Creation date: 2024-06-27T18:06:22.160947
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/AS1C04_001T01_9000002948_19740cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19740cztM0_level2_quad_clean.evt
Size (bytes)479,568,960114,589,440
Size457.4 MB 109.3 MB
Events in quadrant A2,915,383770,791
Events in quadrant B3,010,446788,220
Events in quadrant C2,994,680771,053
Events in quadrant D5,191,979717,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127991
B0130601
C0130691
D0196592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6061340.560964%
B6062350.577367%
C6062590.973276%
D60614918.100973%

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 7206 6062 18 18 0.25% 0.30%
B 7207 6062 4 4 0.06% 0.07%
C 7207 6063 1 1 0.01% 0.02%
D 7206 6062 409 409 5.68% 6.75%

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 121091 824.96 720 704 145.9
A 11 29 15165 99.1 720 704 145.9
A 0 226 6438 39.29 720 704 145.9
B 0 197 40346 290.92 727 708 136.2
B 4 216 39284 283.13 727 708 136.2
B 0 190 36158 260.19 727 708 136.2
C 14 238 113024 686.71 708 715 163.5
C 3 233 91301 553.88 708 715 163.5
C 4 175 11983 68.89 708 715 163.5
D 1 52 2277274 13611.15 691 668 167.3
D 13 172 189547 1129.25 691 668 167.3
D 2 234 28277 165.07 691 668 167.3

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