ASTROSAT CZTI

Data Quality Report

Orbit 44171

Creation date: 2024-06-27T23:00:03.606082
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_079T01_9000005956_44171cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44171cztM0_level2_quad_clean.evt
Size (bytes)593,582,400103,798,080
Size566.1 MB 99.0 MB
Events in quadrant A4,449,518753,196
Events in quadrant B4,289,967744,163
Events in quadrant C3,242,486738,428
Events in quadrant D9,481,404449,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177482
B0173162
C0143512
D0326932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65531422.166946%
B65534787.294369%
C6553560.854570%
D6553239636.563406%

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 7734 6556 7 7 0.09% 0.11%
B 7734 6556 282 282 3.65% 4.30%
C 7734 6556 38 38 0.49% 0.58%
D 7734 6556 1951 1951 25.23% 29.76%

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 1429173 9251.41 746 730 154.4
A 12 227 39560 251.49 746 730 154.4
A 15 223 35538 225.44 746 730 154.4
B 5 172 1106563 7769.14 728 706 142.3
B 0 213 91443 637.47 728 706 142.3
B 0 219 53358 369.9 728 706 142.3
C 14 254 296787 1716.6 728 732 172.5
C 1 16 46790 267.05 728 732 172.5
C 9 54 41665 237.34 728 732 172.5
D 12 3 3865541 26844.62 563 544 144.0
D 13 187 2427084 16853.71 563 544 144.0
D 1 52 491695 3411.33 563 544 144.0

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