ASTROSAT CZTI

Data Quality Report

Orbit 21282

Creation date: 2024-06-27T18:25:49.761409
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/AS1A05_037T01_9000003140_21282cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21282cztM0_level2_quad_clean.evt
Size (bytes)580,294,080113,938,560
Size553.4 MB 108.7 MB
Events in quadrant A4,020,621732,596
Events in quadrant B4,044,890747,783
Events in quadrant C3,926,439721,942
Events in quadrant D5,040,348693,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172112
B0171872
C0167972
D0202622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79881131.414622%
B79891151.439479%
C79891271.589686%
D79892713.392164%

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 8753 7990 53 53 0.61% 0.66%
B 8754 7990 14 14 0.16% 0.18%
C 8754 7991 0 0 0.00% 0.00%
D 8754 7990 174 174 1.99% 2.18%

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 4 2 93267 461.17 984 962 200.2
A 15 174 75861 374.21 984 962 200.2
A 5 16 49103 240.52 984 962 200.2
B 3 64 49617 253.27 987 962 192.1
B 0 228 34841 176.36 987 962 192.1
B 0 230 29246 147.23 987 962 192.1
C 14 238 145963 655.52 944 948 221.2
C 3 233 79162 353.55 944 948 221.2
C 8 128 12565 52.51 944 948 221.2
D 12 233 492780 2124.65 947 919 231.5
D 13 174 447277 1928.1 947 919 231.5
D 1 52 197547 849.36 947 919 231.5

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