ASTROSAT CZTI

Data Quality Report

Orbit 20089

Creation date: 2024-06-27T18:11:07.859736
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/AS1A05_180T01_9000002992_20089cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20089cztM0_level2_quad_clean.evt
Size (bytes)430,698,24077,057,280
Size410.7 MB 73.5 MB
Events in quadrant A3,288,591495,386
Events in quadrant B3,115,229505,682
Events in quadrant C3,168,229467,278
Events in quadrant D3,090,434473,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0162
C0162
D0171

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153122150
B0143751833
C0147242002
D0145271953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013012
B01308
C012919
D012816

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55641542.767793%
B55901061.896243%
C55651192.138365%
D5577771.380671%

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 7684 6314 32 32 0.42% 0.51%
B 7684 6332 7 7 0.09% 0.11%
C 7684 6326 13 13 0.17% 0.21%
D 7683 6341 11 11 0.14% 0.17%

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 14 238 191972 1228.8 786 773 155.6
A 12 16 28870 180.57 786 773 155.6
A 4 2 21944 136.06 786 773 155.6
B 4 80 34728 235.3 778 761 144.4
B 12 111 16914 111.9 778 761 144.4
B 0 214 16554 109.4 778 761 144.4
C 4 254 185723 1092.49 735 746 169.3
C 14 238 116153 681.6 735 746 169.3
C 13 61 5120 25.83 735 746 169.3
D 1 52 152263 835.72 760 742 181.3
D 13 249 39764 215.23 760 742 181.3
D 2 234 25057 134.11 760 742 181.3

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