ASTROSAT CZTI

Data Quality Report

Orbit 35032

Creation date: 2022-06-11T13:45:00.518335
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/AS1T05_010T01_9000005016_35032cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35032cztM0_level2_quad_clean.evt
Size (bytes)384,658,56094,631,040
Size366.8 MB 90.2 MB
Events in quadrant A2,436,051643,163
Events in quadrant B2,550,329654,112
Events in quadrant C2,682,666630,656
Events in quadrant D3,642,356589,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102793
B0105242
C0106692
D0143062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496880.161031%
B4968120.241546%
C4968380.764895%
D49681252.516103%

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 7060 4969 0 0 0.00% 0.00%
B 7060 4969 8 8 0.11% 0.16%
C 7060 4969 30 30 0.42% 0.60%
D 7060 4969 115 115 1.63% 2.31%

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 10 83 76387 622.48 607 597 121.8
A 13 6 11183 86.95 607 597 121.8
A 13 254 7969 60.55 607 597 121.8
B 5 172 88923 759.1 609 594 116.4
B 5 255 32026 270.13 609 594 116.4
B 4 232 18664 155.29 609 594 116.4
C 15 214 207177 1499.69 591 598 137.7
C 0 10 125936 909.91 591 598 137.7
C 14 67 42814 306.47 591 598 137.7
D 8 195 822760 5771.75 580 565 142.5
D 10 118 194068 1358.37 580 565 142.5
D 2 31 126222 882.1 580 565 142.5

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