ASTROSAT CZTI

Data Quality Report

Orbit 25390

Creation date: 2024-06-27T19:17:08.276151
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/AS1A09_057T04_9000003712_25390cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25390cztM0_level2_quad_clean.evt
Size (bytes)772,712,64077,296,320
Size736.9 MB 73.7 MB
Events in quadrant A5,685,994503,775
Events in quadrant B3,424,034514,370
Events in quadrant C3,287,694478,483
Events in quadrant D10,581,027405,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212210
B0136400
C0133330
D0358400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62664877.772103%
B6267881.404181%
C62671121.787139%
D6267256140.864848%

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 7546 6267 309 309 4.09% 4.93%
B 7547 6268 3 3 0.04% 0.05%
C 7547 6267 0 0 0.00% 0.00%
D 7546 6266 2232 2232 29.58% 35.62%

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 6 16 2360884 13970.46 854 839 168.9
A 15 173 31999 184.45 854 839 168.9
A 13 254 8560 45.71 854 839 168.9
B 0 190 50807 320.67 844 826 155.9
B 0 229 24773 153.64 844 826 155.9
B 12 111 18667 114.46 844 826 155.9
C 14 238 132283 707.44 807 813 185.8
C 13 61 5497 25.2 807 813 185.8
C 7 247 4816 21.54 807 813 185.8
D 1 52 5906251 34297.77 725 705 172.2
D 7 238 1193244 6925.93 725 705 172.2
D 8 195 649970 3770.75 725 705 172.2

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