ASTROSAT CZTI

Data Quality Report

Orbit 20231001_A12_088T25_9000005866_level2

Creation date: 2023-10-03T15:18:35.224793
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_088T25_9000005866cztM0_level2.fits modeM0/AS1A12_088T25_9000005866cztM0_level2_quad_clean.evt
Size (bytes)677,669,760758,139,840
Size646.3 MB 723.0 MB
Events in quadrant A3,978,2444,511,534
Events in quadrant B3,920,0084,723,740
Events in quadrant C3,996,9704,531,078
Events in quadrant D3,433,0444,001,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015500
B015500
C015500
D015500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01981910
B01625730
C01571250
D01866620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7573828063.704877%
B757384950.653569%
C757381830.241622%
D7573822182.928517%

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 104383 75467 0 0 0.00% 0.00%
B 104383 75734 0 0 0.00% 0.00%
C 104383 75737 0 0 0.00% 0.00%
D 104383 75693 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 3343 9.02 1039 968 263.4
A 7 110 3220 8.55 1039 968 263.4
A 0 29 3193 8.45 1039 968 263.4
B 2 9 3440 11.99 1034 983 204.8
B 5 232 2828 9.01 1034 983 204.8
B 2 8 2786 8.8 1034 983 204.8
C 1 81 3293 8.48 1057 989 271.7
C 3 202 3265 8.38 1057 989 271.7
C 3 203 3232 8.26 1057 989 271.7
D 10 189 2576 6.38 981 892 264.0
D 7 3 2555 6.3 981 892 264.0
D 10 113 2481 6.02 981 892 264.0

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