ASTROSAT CZTI

Data Quality Report

Orbit 52430

Creation date: 2025-06-28T14:38:15.234744
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/AS1A13_037T01_9000006476_52430cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52430cztM0_level2_quad_clean.evt
Size (bytes)870,744,960102,375,360
Size830.4 MB 97.6 MB
Events in quadrant A4,292,108746,881
Events in quadrant B3,891,404801,126
Events in quadrant C9,157,494602,547
Events in quadrant D14,268,429389,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184420
B0173660
C0328300
D0479253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8047901.118429%
B8047730.907170%
C8048143517.830517%
D8047376046.725488%

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 8047 8047 56 56 0.70% 0.70%
B 8047 8047 46 46 0.57% 0.57%
C 8048 8048 1229 1229 15.27% 15.27%
D 8046 8046 3387 3387 42.10% 42.10%

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 8 26 195365 923.82 858 838 210.6
A 4 3 178784 845.08 858 838 210.6
A 7 206 154772 731.04 858 838 210.6
B 7 236 105413 576.03 846 817 181.6
B 4 81 86399 471.32 846 817 181.6
B 10 247 56656 307.52 846 817 181.6
C 15 231 1913087 9163.01 764 758 208.7
C 15 178 1847537 8848.92 764 758 208.7
C 15 224 765993 3666.66 764 758 208.7
D 12 2 3246270 17060.15 657 627 190.2
D 12 17 3233157 16991.22 657 627 190.2
D 12 18 1314518 6906.24 657 627 190.2

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