ASTROSAT CZTI

Data Quality Report

Orbit 35666

Creation date: 2022-05-03T22:44:46.645925
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_001T07_9000005104_35666cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35666cztM0_level2_quad_clean.evt
Size (bytes)489,136,320106,948,800
Size466.5 MB 102.0 MB
Events in quadrant A2,864,748731,850
Events in quadrant B4,358,808707,589
Events in quadrant C3,415,058736,781
Events in quadrant D3,824,663700,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119223
B0163622
C0132882
D0148912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168541.044892%
B516861111.822755%
C51682374.585913%
D51682625.069659%

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 7143 5168 21 21 0.29% 0.41%
B 7143 5168 444 444 6.22% 8.59%
C 7143 5168 200 200 2.80% 3.87%
D 7143 5168 237 237 3.32% 4.59%

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 15 169 252349 2001.96 628 618 125.7
A 10 83 150692 1193.51 628 618 125.7
A 13 6 16998 130.27 628 618 125.7
B 5 172 1704657 15194.25 602 587 112.2
B 5 255 217584 1934.84 602 587 112.2
B 3 112 29638 259.03 602 587 112.2
C 0 10 407470 2879.69 617 620 141.3
C 1 23 374046 2643.11 617 620 141.3
C 15 214 211694 1493.98 617 620 141.3
D 7 80 462424 3107.68 617 603 148.6
D 13 249 432769 2908.12 617 603 148.6
D 8 230 164180 1100.74 617 603 148.6

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