ASTROSAT CZTI

Data Quality Report

Orbit 13501

Creation date: 2024-06-27T16:41:44.227124
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/AS1A04_103T01_9000001988_13501cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13501cztM0_level2_quad_clean.evt
Size (bytes)522,754,56084,859,200
Size498.5 MB 80.9 MB
Events in quadrant A3,617,152532,124
Events in quadrant B4,606,607539,619
Events in quadrant C3,345,975533,982
Events in quadrant D3,820,344509,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150273
B0179362
C0140512
D0155882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65071101.690487%
B65073475.332719%
C65071031.582911%
D6507861.321654%

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 8488 6508 16 16 0.19% 0.25%
B 8488 6509 180 180 2.12% 2.77%
C 8488 6509 18 18 0.21% 0.28%
D 8488 6508 12 12 0.14% 0.18%

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 14 238 449120 2750.97 811 794 163.0
A 8 15 21884 129.41 811 794 163.0
A 1 162 20024 118.0 811 794 163.0
B 3 64 1434237 9333.7 800 779 153.6
B 12 111 18246 113.73 800 779 153.6
B 10 245 17490 108.81 800 779 153.6
C 14 220 135964 733.83 798 803 184.2
C 3 233 91836 494.25 798 803 184.2
C 13 61 5599 26.04 798 803 184.2
D 8 195 661074 3474.57 789 765 190.0
D 11 129 125449 656.09 789 765 190.0
D 13 122 20591 104.33 789 765 190.0

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