ASTROSAT CZTI

Data Quality Report

Orbit 03178

Creation date: 2024-06-27T14:25:34.363539
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/AS1G05_218T02_9000000434_03178cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03178cztM0_level2_quad_clean.evt
Size (bytes)803,522,880115,680,960
Size766.3 MB 110.3 MB
Events in quadrant A5,618,492763,406
Events in quadrant B4,617,043770,478
Events in quadrant C8,335,190621,267
Events in quadrant D5,172,660740,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228301
B0198241
C0308701
D0217141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87413504.004119%
B87412823.226175%
C8741180020.592610%
D87413113.557945%

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 9141 8742 267 267 2.92% 3.05%
B 9141 8742 185 185 2.02% 2.12%
C 9140 8741 1502 1502 16.43% 17.18%
D 9141 8742 236 236 2.58% 2.70%

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 14 249 1682828 8781.63 938 914 191.5
A 12 247 207888 1080.66 938 914 191.5
A 8 15 87373 451.42 938 914 191.5
B 4 80 583631 3141.91 958 934 185.5
B 4 81 195610 1049.7 958 934 185.5
B 2 249 25987 135.09 958 934 185.5
C 12 206 4155412 22391.02 791 791 185.5
C 1 192 959659 5167.75 791 791 185.5
C 6 80 50010 265.26 791 791 185.5
D 5 233 732013 3253.26 919 890 224.7
D 10 199 251301 1114.25 919 890 224.7
D 2 136 217076 961.96 919 890 224.7

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
Veto Counter