ASTROSAT CZTI

Data Quality Report

Orbit 20230320_A12_022T01_9000005540_level2

Creation date: 2023-03-27T15:38:56.541955
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_022T01_9000005540cztM0_level2.fits modeM0/AS1A12_022T01_9000005540cztM0_level2_quad_clean.evt
Size (bytes)3,491,196,4804,086,178,560
Size3.3 GB 3.8 GB
Events in quadrant A21,311,53026,006,972
Events in quadrant B20,361,39425,936,548
Events in quadrant C20,886,75624,993,413
Events in quadrant D16,040,92019,720,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08476050
B08641220
C08321710
D010813630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015100
B015100
C015100
D015110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080800
B080800
C080800
D080800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3957579160.231455%
B39575433960.858109%
C39575716260.410858%
D3957576672616.860346%

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 551428 395756 0 0 0.00% 0.00%
B 551428 395741 0 0 0.00% 0.00%
C 551428 395734 0 0 0.00% 0.00%
D 551428 393779 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 17551 9.01 5567 5238 1366.0
A 7 110 17384 8.89 5567 5238 1366.0
A 0 29 17114 8.69 5567 5238 1366.0
B 2 9 17462 11.96 5392 5161 1028.8
B 3 80 14811 9.38 5392 5161 1028.8
B 2 8 14163 8.75 5392 5161 1028.8
C 1 81 16987 8.35 5523 5173 1415.0
C 3 202 16751 8.18 5523 5173 1415.0
C 3 203 16593 8.07 5523 5173 1415.0
D 10 189 12246 5.91 4666 4247 1353.1
D 7 3 12164 5.85 4666 4247 1353.1
D 4 160 11932 5.68 4666 4247 1353.1

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