ASTROSAT CZTI

Data Quality Report

Orbit 37535

Creation date: 2024-06-27T21:41:11.002335
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_061T01_9000005330_37535cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37535cztM0_level2_quad_clean.evt
Size (bytes)429,554,88090,161,280
Size409.7 MB 86.0 MB
Events in quadrant A3,621,820593,286
Events in quadrant B2,787,498617,303
Events in quadrant C2,979,995610,611
Events in quadrant D3,286,091564,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139663
B0114132
C0118012
D0130312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49171002.033760%
B4917470.955867%
C49171072.176124%
D49172024.108196%

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 7009 4918 72 72 1.03% 1.46%
B 7009 4918 27 27 0.39% 0.55%
C 7009 4918 85 85 1.21% 1.73%
D 7009 4918 174 174 2.48% 3.54%

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 15 222 853269 6878.71 607 598 124.0
A 10 83 292955 2358.52 607 598 124.0
A 9 143 77703 622.03 607 598 124.0
B 5 172 79471 675.49 616 601 116.8
B 4 141 66974 568.46 616 601 116.8
B 0 190 35990 303.09 616 601 116.8
C 14 254 296743 2080.54 604 610 142.3
C 15 214 210075 1471.64 604 610 142.3
C 0 10 105121 734.26 604 610 142.3
D 2 249 325534 2249.86 593 577 144.4
D 13 249 200979 1387.5 593 577 144.4
D 12 227 174393 1203.43 593 577 144.4

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