ASTROSAT CZTI

Data Quality Report

Orbit 35864

Creation date: 2022-06-08T19:41:28.748427
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/AS1A11_080T01_9000005146_35864cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35864cztM0_level2_quad_clean.evt
Size (bytes)919,198,08098,847,360
Size876.6 MB 94.3 MB
Events in quadrant A12,191,844580,015
Events in quadrant B5,217,549613,989
Events in quadrant C4,585,581622,906
Events in quadrant D5,274,138590,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421553
B0210622
C0188002
D0213032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8432227927.027989%
B84322923.462998%
C8432620.735294%
D84323013.569734%

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 11356 8434 1577 1577 13.89% 18.70%
B 11356 8434 193 193 1.70% 2.29%
C 11356 8434 44 44 0.39% 0.52%
D 11356 8434 216 216 1.90% 2.56%

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 8401255 45468.26 917 900 184.8
A 10 83 198148 1067.64 917 900 184.8
A 7 48 31645 166.41 917 900 184.8
B 5 172 599716 3163.52 977 951 189.3
B 5 255 439352 2316.25 977 951 189.3
B 0 213 192821 1013.73 977 951 189.3
C 15 214 349872 1562.45 963 974 223.3
C 15 208 321987 1437.58 963 974 223.3
C 0 10 87192 386.11 963 974 223.3
D 2 250 489811 2111.33 950 924 231.6
D 13 249 357825 1541.33 950 924 231.6
D 8 195 264781 1139.51 950 924 231.6

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