ASTROSAT CZTI

Data Quality Report

Orbit 27555

Creation date: 2024-06-27T19:41:27.883276
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/AS1C05_019T04_9000003956_27555cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27555cztM0_level2_quad_clean.evt
Size (bytes)474,359,040102,827,520
Size452.4 MB 98.1 MB
Events in quadrant A3,105,169673,398
Events in quadrant B3,679,613678,952
Events in quadrant C3,225,657660,487
Events in quadrant D3,905,543639,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135970
B0152910
C0138640
D0162030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617290.438265%
B66171732.614478%
C6617831.254345%
D66171622.448239%

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 7627 6617 0 0 0.00% 0.00%
B 7627 6617 98 98 1.28% 1.48%
C 7627 6617 4 4 0.05% 0.06%
D 7627 6617 95 95 1.25% 1.44%

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 13 254 10824 62.2 802 784 161.4
A 3 137 7933 44.29 802 784 161.4
A 10 67 6866 37.68 802 784 161.4
B 10 245 521081 3432.32 797 776 151.6
B 12 111 18499 116.91 797 776 151.6
B 11 111 16855 106.07 797 776 151.6
C 14 238 124771 671.67 782 784 184.6
C 10 22 21429 111.84 782 784 184.6
C 7 221 19589 101.87 782 784 184.6
D 1 52 749385 4045.75 782 761 185.0
D 2 250 73165 391.29 782 761 185.0
D 12 233 43006 228.3 782 761 185.0

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