ASTROSAT CZTI

Data Quality Report

Orbit 12398

Creation date: 2024-06-27T16:26:41.498574
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/AS1G08_083T02_9000001840_12398cztM0_level2.evt modeM0/AS1G08_083T02_9000001840_12398cztM0_level2_quad_clean.evt
Size (bytes)434,367,36063,933,120
Size414.2 MB 61.0 MB
Events in quadrant A3,289,128402,228
Events in quadrant B2,778,716406,141
Events in quadrant C2,258,734404,764
Events in quadrant D4,483,827367,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133252
B0116001
C0102721
D0167371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50741603.153331%
B50741192.345290%
C5074170.335041%
D507460111.844698%

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 5730 5076 38 38 0.66% 0.75%
B 5730 5076 64 64 1.12% 1.26%
C 5730 5075 0 0 0.00% 0.00%
D 5730 5075 646 646 11.27% 12.73%

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 1 162 218930 1804.37 591 577 121.0
A 14 237 171611 1413.35 591 577 121.0
A 13 251 147394 1213.23 591 577 121.0
B 4 239 330995 2883.17 592 579 114.6
B 0 187 25429 216.84 592 579 114.6
B 0 189 24003 204.4 592 579 114.6
C 13 61 4242 26.98 578 579 135.8
C 14 234 2150 11.57 578 579 135.8
C 3 202 1489 6.7 578 579 135.8
D 1 52 1807077 13053.64 558 540 138.4
D 10 199 333835 2408.32 558 540 138.4
D 10 157 43435 309.95 558 540 138.4

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