ASTROSAT CZTI

Data Quality Report

Orbit 51925

Creation date: 2025-05-04T23:18:58.736565
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/AS1C09_011T05_9000006466_51925cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51925cztM0_level2_quad_clean.evt
Size (bytes)2,862,325,440191,882,880
Size2.7 GB 183.0 MB
Events in quadrant A23,291,8571,289,733
Events in quadrant B15,688,4661,607,292
Events in quadrant C27,636,9891,046,903
Events in quadrant D37,922,971594,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820873
B0595573
C0948573
D01253553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18414445024.166395%
B18414253413.761269%
C18414726839.469969%
D184141217566.118171%

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 19709 18416 3799 3799 19.28% 20.63%
B 19708 18416 1796 1796 9.11% 9.75%
C 19708 18414 6252 6252 31.72% 33.95%
D 19709 18414 11371 11371 57.69% 61.75%

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 7 64 3888947 8734.38 1782 1740 445.0
A 8 248 2943040 6608.97 1782 1740 445.0
A 12 3 2873379 6452.44 1782 1740 445.0
B 4 206 2693937 6944.24 1834 1768 387.7
B 5 185 1435141 3697.27 1834 1768 387.7
B 12 32 1147951 2956.49 1834 1768 387.7
C 15 224 16318729 38162.83 1549 1537 427.6
C 0 193 999774 2334.69 1549 1537 427.6
C 15 158 658802 1537.22 1549 1537 427.6
D 12 17 21477240 64800.7 1171 1118 331.4
D 6 42 4666516 14077.08 1171 1118 331.4
D 2 172 1984176 5983.55 1171 1118 331.4

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