ASTROSAT CZTI

Data Quality Report

Orbit 20230423_A12_052T04_9000005582_level2

Creation date: 2023-04-28T12:36:57.602119
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/AS1A12_052T04_9000005582cztM0_level2.fits modeM0/AS1A12_052T04_9000005582cztM0_level2_quad_clean.evt
Size (bytes)2,038,723,2002,298,856,320
Size1.9 GB 2.1 GB
Events in quadrant A12,458,74814,652,484
Events in quadrant B11,966,24014,612,448
Events in quadrant C10,944,07212,088,919
Events in quadrant D10,392,39212,308,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08730
B08730
C08730
D08730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047600
B047600
C047600
D047600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040910
B04813420
C06918750
D05980830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2330735030.215812%
B2330738720.374132%
C2330733007112.901966%
D23307393003.990166%

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 320450 233073 0 0 0.00% 0.00%
B 320450 233067 0 0 0.00% 0.00%
C 320450 228881 0 0 0.00% 0.00%
D 320450 232753 0 0 0.00% 0.00%

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 9 19 10257 8.87 3248 3043 813.0
A 7 110 10177 8.78 3248 3043 813.0
A 0 29 10045 8.61 3248 3043 813.0
B 2 9 10181 11.71 3162 3012 612.0
B 3 80 8547 9.04 3162 3012 612.0
B 3 17 8430 8.85 3162 3012 612.0
C 1 81 8979 8.48 2892 2707 739.7
C 3 203 8635 8.01 2892 2707 739.7
C 3 202 8621 8.0 2892 2707 739.7
D 7 3 7730 6.34 2972 2701 792.9
D 10 189 7653 6.24 2972 2701 792.9
D 4 160 7452 5.99 2972 2701 792.9

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