ASTROSAT CZTI

Data Quality Report

Orbit 42618

Creation date: 2024-06-27T22:42:16.763325
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/AS1A05_174T01_9000005820_42618cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42618cztM0_level2_quad_clean.evt
Size (bytes)337,464,00090,210,240
Size321.8 MB 86.0 MB
Events in quadrant A2,926,354610,600
Events in quadrant B2,429,974628,854
Events in quadrant C2,547,128607,910
Events in quadrant D4,194,957530,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116442
B0104663
C0103702
D0158112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5051180.356365%
B5050220.435644%
C505070.138614%
D50503577.069307%

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 7023 5052 8 8 0.11% 0.16%
B 7022 5051 12 12 0.17% 0.24%
C 7022 5051 4 4 0.06% 0.08%
D 7022 5051 349 349 4.97% 6.91%

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 516995 4266.98 589 576 121.0
A 7 3 92047 755.79 589 576 121.0
A 13 248 22483 181.01 589 576 121.0
B 0 245 88854 785.18 583 567 112.4
B 0 168 37010 324.11 583 567 112.4
B 12 111 13814 117.81 583 567 112.4
C 15 214 210466 1543.85 584 589 135.9
C 15 111 20148 143.88 584 589 135.9
C 14 254 17516 124.51 584 589 135.9
D 1 52 841999 6079.47 568 552 138.4
D 13 249 432844 3123.32 568 552 138.4
D 12 6 324990 2344.07 568 552 138.4

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