ASTROSAT CZTI

Data Quality Report

Orbit 35205

Creation date: 2022-04-02T20:03:59.385467
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/AS1C07_004T01_9000005052_35205cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35205cztM0_level2_quad_clean.evt
Size (bytes)648,120,96091,445,760
Size618.1 MB 87.2 MB
Events in quadrant A3,407,368632,843
Events in quadrant B6,055,115578,947
Events in quadrant C3,590,277622,579
Events in quadrant D6,229,638574,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133132
B0215241
C0137201
D0221131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51271873.647357%
B5127117122.839867%
C51272134.154476%
D512759511.605227%

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 7280 5128 163 163 2.24% 3.18%
B 7280 5128 799 799 10.98% 15.58%
C 7280 5128 212 212 2.91% 4.13%
D 7280 5128 752 752 10.33% 14.66%

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 7 16 559388 4367.45 642 632 127.9
A 14 250 241957 1886.29 642 632 127.9
A 10 83 88373 685.82 642 632 127.9
B 5 236 3677488 33238.42 584 571 110.6
B 3 112 28902 256.11 584 571 110.6
B 5 172 27775 245.92 584 571 110.6
C 9 69 716895 5131.2 609 615 139.6
C 0 10 215101 1536.51 609 615 139.6
C 15 214 213673 1526.28 609 615 139.6
D 8 195 2690352 18163.61 608 593 148.1
D 7 80 354560 2390.3 608 593 148.1
D 13 249 220343 1483.94 608 593 148.1

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