ASTROSAT CZTI

Data Quality Report

Orbit 35060

Creation date: 2022-03-24T17:18:29.516231
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/AS1A10_057T01_9000005022_35060cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35060cztM0_level2_quad_clean.evt
Size (bytes)424,082,88070,326,720
Size404.4 MB 67.1 MB
Events in quadrant A2,447,661464,762
Events in quadrant B2,915,206457,271
Events in quadrant C2,731,158453,136
Events in quadrant D4,416,084409,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102723
B0116642
C0108422
D0165642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490890.183374%
B49081342.730236%
C4908621.263244%
D49082735.562347%

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 7031 4909 3 3 0.04% 0.06%
B 7031 4909 114 114 1.62% 2.32%
C 7031 4909 57 57 0.81% 1.16%
D 7031 4909 294 294 4.18% 5.99%

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 80713 657.57 604 594 121.8
A 9 143 11857 92.44 604 594 121.8
A 13 6 9858 76.03 604 594 121.8
B 5 172 382300 3393.18 594 579 112.5
B 5 200 104111 920.31 594 579 112.5
B 3 112 49795 437.49 594 579 112.5
C 15 214 206097 1507.05 591 597 136.4
C 0 10 170893 1248.87 591 597 136.4
C 14 67 25825 185.01 591 597 136.4
D 8 195 1188651 8420.71 579 564 141.1
D 12 227 277948 1965.99 579 564 141.1
D 10 118 245099 1733.17 579 564 141.1

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