ASTROSAT CZTI

Data Quality Report

Orbit 01234

Creation date: 2024-06-27T14:09:34.051013
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/AS1G04_011T02_9000000226_01234cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01234cztM0_level2_quad_clean.evt
Size (bytes)617,114,88048,182,400
Size588.5 MB 46.0 MB
Events in quadrant A4,112,958320,895
Events in quadrant B6,465,663289,892
Events in quadrant C4,137,898316,137
Events in quadrant D3,770,877314,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143531
B0214020
C0144300
D0133630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A304590.295567%
B304557418.850575%
C304510.032841%
D304500.000000%

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 3045 3045 245 245 8.05% 8.05%
B 3045 3045 1546 1546 50.77% 50.77%
C 3045 3045 234 234 7.68% 7.68%
D 3045 3045 144 144 4.73% 4.73%

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 3 80 22584 83.91 1059 1061 256.5
A 12 243 16299 59.4 1059 1061 256.5
A 13 9 7128 23.65 1059 1061 256.5
B 2 32 2364539 9619.62 1025 1026 245.7
B 5 200 95147 383.08 1025 1026 245.7
B 15 22 43259 171.89 1025 1026 245.7
C 15 241 165125 577.01 1009 1043 284.4
C 3 79 15452 50.67 1009 1043 284.4
C 3 111 13981 45.5 1009 1043 284.4
D 10 84 17527 52.78 1003 1037 312.4
D 10 85 7843 21.79 1003 1037 312.4
D 1 255 2625 5.08 1003 1037 312.4

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