ASTROSAT CZTI

Data Quality Report

Orbit 26505

Creation date: 2024-06-27T19:29:51.982519
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/AS1C05_017T01_9000003836_26505cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26505cztM0_level2_quad_clean.evt
Size (bytes)551,208,96091,609,920
Size525.7 MB 87.4 MB
Events in quadrant A3,294,882601,497
Events in quadrant B3,723,441606,357
Events in quadrant C3,694,352586,350
Events in quadrant D5,571,679558,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133940
B0149460
C0149900
D0208390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6045981.621175%
B60461332.199802%
C60461642.712537%
D60453726.153846%

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 7300 6046 1 1 0.01% 0.02%
B 7301 6046 20 20 0.27% 0.33%
C 7301 6046 0 0 0.00% 0.00%
D 7300 6045 308 308 4.22% 5.10%

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 13 254 10345 56.39 852 841 168.5
A 6 16 8485 45.36 852 841 168.5
A 0 226 7306 38.36 852 841 168.5
B 0 189 173762 1088.19 848 833 158.9
B 5 172 92729 578.27 848 833 158.9
B 0 190 87998 548.5 848 833 158.9
C 3 233 300399 1567.14 826 836 191.2
C 14 238 135089 702.33 826 836 191.2
C 4 254 20494 102.84 826 836 191.2
D 1 52 1338294 6788.19 824 808 197.0
D 12 233 713144 3615.34 824 808 197.0
D 14 35 332677 1684.35 824 808 197.0

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