ASTROSAT CZTI

Data Quality Report

Orbit 27535

Creation date: 2024-06-27T19:41:08.173382
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_038T16_9000003938_27535cztM0_level2.evt modeM0/AS1A09_038T16_9000003938_27535cztM0_level2_quad_clean.evt
Size (bytes)128,764,80017,498,880
Size122.8 MB 16.7 MB
Events in quadrant A858,073100,549
Events in quadrant B894,666104,608
Events in quadrant C939,947101,923
Events in quadrant D1,090,06698,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035870
B037030
C037960
D042720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16781096.495828%
B16781187.032181%
C16781358.045292%
D16781267.508939%

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 1738 1678 1 1 0.06% 0.06%
B 1738 1678 4 4 0.23% 0.24%
C 1738 1678 3 3 0.17% 0.18%
D 1738 1678 44 44 2.53% 2.62%

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 0 13 10525 226.29 218 212 45.6
A 6 16 4562 95.44 218 212 45.6
A 13 254 2361 47.15 218 212 45.6
B 10 245 27955 644.7 215 209 43.0
B 0 230 6949 156.61 215 209 43.0
B 4 200 6211 139.46 215 209 43.0
C 2 16 39254 768.5 212 212 50.8
C 7 221 38733 758.25 212 212 50.8
C 14 238 34185 668.73 212 212 50.8
D 1 52 237598 4542.78 214 207 52.3
D 8 195 12430 233.9 214 207 52.3
D 12 227 9307 174.14 214 207 52.3

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