ASTROSAT CZTI

Data Quality Report

Orbit 20224

Creation date: 2024-06-27T18:12:39.651450
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_117T01_9000002998_20224cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20224cztM0_level2_quad_clean.evt
Size (bytes)563,693,76070,070,400
Size537.6 MB 66.8 MB
Events in quadrant A3,487,326424,451
Events in quadrant B3,868,641420,367
Events in quadrant C3,435,853401,095
Events in quadrant D5,812,985396,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145751
B0157151
C0142361
D0217911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68751351.963636%
B68761942.821408%
C68761141.657941%
D687688512.870855%

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 7535 6876 20 20 0.27% 0.29%
B 7536 6877 37 37 0.49% 0.54%
C 7536 6877 3 3 0.04% 0.04%
D 7536 6877 707 707 9.38% 10.28%

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 14 238 123419 697.92 866 846 175.6
A 10 253 19209 104.56 866 846 175.6
A 4 2 12670 67.32 866 846 175.6
B 7 220 356590 2182.09 853 830 163.0
B 0 198 32476 194.1 853 830 163.0
B 0 197 30333 180.96 853 830 163.0
C 14 238 127995 655.09 825 831 194.1
C 3 233 67646 344.2 825 831 194.1
C 9 54 14793 71.93 825 831 194.1
D 1 52 1358910 6873.83 807 786 197.6
D 12 218 731276 3697.21 807 786 197.6
D 12 17 534551 2701.53 807 786 197.6

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