ASTROSAT CZTI

Data Quality Report

Orbit 51893

Creation date: 2025-05-02T19:12:55.289576
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/AS1C09_011T05_9000006466_51893cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51893cztM0_level2_quad_clean.evt
Size (bytes)894,355,20086,014,080
Size852.9 MB 82.0 MB
Events in quadrant A5,550,543641,901
Events in quadrant B8,463,056575,528
Events in quadrant C4,184,791636,557
Events in quadrant D14,346,844245,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214620
B0301240
C0174370
D0476150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72463334.595639%
B7246188125.959150%
C72471211.669656%
D7247454362.688009%

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 7246 7246 233 233 3.22% 3.22%
B 7246 7246 1262 1262 17.42% 17.42%
C 7247 7247 83 83 1.15% 1.15%
D 7247 7247 3737 3737 51.57% 51.57%

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 12 3 840528 4528.78 749 730 185.4
A 15 174 378893 2039.32 749 730 185.4
A 4 207 366462 1972.28 749 730 185.4
B 4 170 2722630 18567.82 683 660 146.6
B 12 32 1723276 11750.76 683 660 146.6
B 4 171 322882 2198.03 683 660 146.6
C 13 3 470606 2338.35 732 727 200.9
C 15 224 98849 488.3 732 727 200.9
C 15 178 84640 417.59 732 727 200.9
D 11 129 5140498 37883.18 481 462 135.7
D 6 206 2106606 15522.74 481 462 135.7
D 6 42 1422260 10478.96 481 462 135.7

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