ASTROSAT CZTI

Data Quality Report

Orbit 18400

Creation date: 2024-06-27T17:49:21.315989
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_094T01_9000002726_18400cztM0_level2.evt modeM0/AS1A05_094T01_9000002726_18400cztM0_level2_quad_clean.evt
Size (bytes)601,151,04083,520,000
Size573.3 MB 79.7 MB
Events in quadrant A3,611,126518,861
Events in quadrant B3,663,037527,765
Events in quadrant C3,749,904496,490
Events in quadrant D6,673,950464,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156612
B0156852
C0158052
D0246715

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74801592.125668%
B74812032.713541%
C74811852.472931%
D7480125716.804813%

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 9095 7482 4 4 0.04% 0.05%
B 9096 7483 3 3 0.03% 0.04%
C 9096 7483 0 0 0.00% 0.00%
D 9095 7482 1153 1153 12.68% 15.41%

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 26741 139.04 918 899 185.9
A 15 174 18641 95.46 918 899 185.9
A 4 2 14510 73.23 918 899 185.9
B 3 64 63025 353.26 920 896 175.9
B 12 111 21431 116.76 920 896 175.9
B 11 111 18137 98.03 920 896 175.9
C 3 233 185502 892.43 880 883 206.9
C 14 238 133725 642.14 880 883 206.9
C 13 61 6380 26.57 880 883 206.9
D 1 52 3417211 17688.55 796 771 193.1
D 7 238 98717 507.11 796 771 193.1
D 12 110 80065 410.54 796 771 193.1

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