ASTROSAT CZTI

Data Quality Report

Orbit 14736

Creation date: 2024-06-27T16:59:16.281365
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_081T01_9000002178_14736cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14736cztM0_level2_quad_clean.evt
Size (bytes)488,148,480100,249,920
Size465.5 MB 95.6 MB
Events in quadrant A3,888,085658,131
Events in quadrant B3,472,382651,982
Events in quadrant C3,578,541638,353
Events in quadrant D3,409,237640,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155723
B0144402
C0145212
D0144082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64162013.132793%
B64161312.041771%
C6416981.527431%
D6416891.387157%

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 7622 6417 18 18 0.24% 0.28%
B 7622 6417 8 8 0.10% 0.12%
C 7622 6417 1 1 0.01% 0.02%
D 7622 6417 1 1 0.01% 0.02%

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 8 15 614401 3647.27 845 828 168.2
A 12 189 16471 92.99 845 828 168.2
A 3 1 8480 45.49 845 828 168.2
B 0 197 93504 580.58 841 822 159.6
B 0 229 30453 185.61 841 822 159.6
B 0 205 25122 152.22 841 822 159.6
C 3 233 322549 1693.57 830 836 190.0
C 14 220 9681 46.56 830 836 190.0
C 6 96 8006 37.74 830 836 190.0
D 12 16 197523 982.25 833 814 200.3
D 13 172 46099 226.13 833 814 200.3
D 2 234 21085 101.22 833 814 200.3

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