ASTROSAT CZTI

Data Quality Report

Orbit 48300

Creation date: 2024-09-06T13:28:33.571692
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/AS1A13_029T01_9000006422_48300cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48300cztM0_level2_quad_clean.evt
Size (bytes)2,301,796,800500,181,120
Size2.1 GB 477.0 MB
Events in quadrant A31,821,4643,314,145
Events in quadrant B15,767,3173,464,413
Events in quadrant C14,155,8403,319,520
Events in quadrant D21,028,3152,879,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011723154
B0682918
C06508410
D08508512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06391
C06400
D06400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315128802.792587%
B315294061.287703%
C315272210.700986%
D3152719276.112221%

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 38411 31530 93 93 0.24% 0.29%
B 38412 31536 70 70 0.18% 0.22%
C 38412 31536 42 42 0.11% 0.13%
D 38412 31536 1452 1452 3.78% 4.60%

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 17896440 24618.27 3515 3441 726.8
A 13 248 257639 349.74 3515 3441 726.8
A 13 254 59136 76.63 3515 3441 726.8
B 4 21 1272274 1840.34 3518 3404 689.5
B 5 255 163169 231.72 3518 3404 689.5
B 5 79 96868 135.56 3518 3404 689.5
C 14 254 315089 381.06 3483 3498 817.7
C 12 2 162160 194.03 3483 3498 817.7
C 1 16 27827 29.75 3483 3498 817.7
D 2 165 4404528 5150.27 3389 3289 854.6
D 2 249 1418494 1656.05 3389 3289 854.6
D 12 221 628934 732.12 3389 3289 854.6

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