ASTROSAT CZTI

Data Quality Report

Orbit 24282

Creation date: 2024-06-27T19:04:18.007347
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_007T01_9000003588_24282cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24282cztM0_level2_quad_clean.evt
Size (bytes)1,358,683,200184,988,160
Size1.3 GB 176.4 MB
Events in quadrant A7,786,8851,160,126
Events in quadrant B7,346,3161,180,838
Events in quadrant C12,819,2711,121,289
Events in quadrant D12,184,5811,104,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330083
B0314413
C0492003
D0463003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150043842.559318%
B150042531.686217%
C1500511167.437521%
D150058435.618127%

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 16219 15005 186 186 1.15% 1.24%
B 16219 15004 12 12 0.07% 0.08%
C 16220 15005 571 571 3.52% 3.81%
D 16220 15006 641 641 3.95% 4.27%

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 6 16 704558 1911.15 1827 1788 367.7
A 3 1 44950 117.38 1827 1788 367.7
A 13 254 22380 56.0 1827 1788 367.7
B 12 17 127888 358.2 1828 1780 352.1
B 12 111 43776 119.28 1828 1780 352.1
B 11 111 39046 105.85 1828 1780 352.1
C 7 247 3808905 9462.08 1718 1728 402.4
C 2 16 2039449 5064.4 1718 1728 402.4
C 14 238 268450 662.89 1718 1728 402.4
D 8 195 3937565 9116.54 1770 1715 431.7
D 1 52 1188405 2748.71 1770 1715 431.7
D 12 218 165654 379.73 1770 1715 431.7

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