ASTROSAT CZTI

Data Quality Report

Orbit 12815

Creation date: 2024-06-27T16:32:42.220854
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/AS1G08_071T01_9000001888_12815cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12815cztM0_level2_quad_clean.evt
Size (bytes)526,864,320108,097,920
Size502.5 MB 103.1 MB
Events in quadrant A3,659,493689,677
Events in quadrant B4,361,624685,133
Events in quadrant C3,504,893697,664
Events in quadrant D3,904,624663,068

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163753
B0182272
C0160322
D0174322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7731770.995990%
B77313965.122235%
C7731660.853706%
D77311662.147200%

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 8293 7735 0 0 0.00% 0.00%
B 8293 7735 139 139 1.68% 1.80%
C 8293 7735 0 0 0.00% 0.00%
D 8293 7735 102 102 1.23% 1.32%

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 12 189 148671 787.72 912 892 187.6
A 0 226 8006 37.92 912 892 187.6
A 12 194 6905 32.05 912 892 187.6
B 4 239 586617 3386.82 899 873 172.9
B 0 219 180331 1037.64 899 873 172.9
B 3 64 25664 143.34 899 873 172.9
C 8 128 8265 35.36 895 901 208.3
C 13 61 6521 26.98 895 901 208.3
C 8 112 4323 16.43 895 901 208.3
D 1 52 346225 1627.96 877 848 212.2
D 8 195 140733 659.36 877 848 212.2
D 2 136 72626 338.33 877 848 212.2

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