ASTROSAT CZTI

Data Quality Report

Orbit 26424

Creation date: 2024-06-27T19:28:50.962188
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_127T03_9000003820_26424cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26424cztM0_level2_quad_clean.evt
Size (bytes)303,024,96060,431,040
Size289.0 MB 57.6 MB
Events in quadrant A1,734,915400,268
Events in quadrant B1,880,689406,060
Events in quadrant C2,327,476382,201
Events in quadrant D2,972,062369,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077780
B080710
C093610
D0114190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3842120.312337%
B3842170.442478%
C38421052.732952%
D38421995.179594%

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 3842 3842 9 9 0.23% 0.23%
B 3842 3842 10 10 0.26% 0.26%
C 3842 3842 67 67 1.74% 1.74%
D 3842 3842 188 188 4.89% 4.89%

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 32548 356.1 438 428 90.2
A 12 189 11733 125.33 438 428 90.2
A 13 254 6452 66.78 438 428 90.2
B 0 244 65880 768.24 435 423 85.2
B 0 189 48568 565.06 435 423 85.2
B 15 32 29519 341.49 435 423 85.2
C 4 254 389801 3982.06 413 416 97.8
C 3 233 183434 1871.64 413 416 97.8
C 14 238 67561 686.66 413 416 97.8
D 1 52 945532 9352.36 417 406 101.1
D 12 233 259275 2561.6 417 406 101.1
D 7 80 113485 1118.96 417 406 101.1

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