ASTROSAT CZTI

Data Quality Report

Orbit 30442

Creation date: 2024-06-27T20:15:18.132674
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/AS1A10_121T02_9000004378_30442cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30442cztM0_level2_quad_clean.evt
Size (bytes)563,469,12098,262,720
Size537.4 MB 93.7 MB
Events in quadrant A3,495,199642,371
Events in quadrant B5,244,924645,261
Events in quadrant C3,669,222634,215
Events in quadrant D4,233,426619,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143732
B0195792
C0150592
D0168402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227941.509555%
B62261482.377128%
C62272443.918420%
D62273575.733098%

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 7497 6227 9 9 0.12% 0.14%
B 7496 6226 0 0 0.00% 0.00%
C 7497 6227 42 42 0.56% 0.67%
D 7497 6227 207 207 2.76% 3.32%

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 0 13 160416 930.6 860 844 171.5
A 13 254 11146 60.08 860 844 171.5
A 8 192 10257 54.9 860 844 171.5
B 6 159 1823342 11310.93 853 835 161.1
B 15 33 30823 186.11 853 835 161.1
B 0 229 28378 170.94 853 835 161.1
C 14 238 136304 705.48 835 845 192.0
C 3 233 129288 668.94 835 845 192.0
C 0 10 119536 618.15 835 845 192.0
D 13 104 448133 2053.1 831 818 217.9
D 13 249 297701 1362.64 831 818 217.9
D 8 195 211908 968.87 831 818 217.9

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