ASTROSAT CZTI

Data Quality Report

Orbit 25940

Creation date: 2024-06-27T19:23:04.766289
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/AS1A07_068T01_9000003760_25940cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25940cztM0_level2_quad_clean.evt
Size (bytes)780,099,84073,566,720
Size744.0 MB 70.2 MB
Events in quadrant A13,118,965263,708
Events in quadrant B2,889,595551,145
Events in quadrant C2,839,212515,727
Events in quadrant D4,390,333494,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428180
B0120690
C0120070
D0168700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721467581.716483%
B5722941.642782%
C57221011.765117%
D57214718.232826%

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 6941 5722 3910 3910 56.33% 68.33%
B 6942 5723 0 0 0.00% 0.00%
C 6942 5723 0 0 0.00% 0.00%
D 6941 5722 354 354 5.10% 6.19%

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 0 13 11402626 130428.67 433 427 87.4
A 12 16 30121 339.67 433 427 87.4
A 13 170 9739 106.52 433 427 87.4
B 12 111 16132 110.12 732 717 140.0
B 0 229 15177 103.3 732 717 140.0
B 11 111 14723 100.05 732 717 140.0
C 14 238 113443 695.98 694 699 162.0
C 3 233 18891 112.3 694 699 162.0
C 13 61 4896 25.91 694 699 162.0
D 1 52 1759178 10552.97 694 676 166.6
D 2 234 23350 136.07 694 676 166.6
D 14 226 6381 34.24 694 676 166.6

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