ASTROSAT CZTI

Data Quality Report

Orbit 47521

Creation date: 2024-07-12T03:03:27.278427
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_002T01_9000006334_47521cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47521cztM0_level2_quad_clean.evt
Size (bytes)527,529,600109,805,760
Size503.1 MB 104.7 MB
Events in quadrant A6,940,868723,115
Events in quadrant B4,193,244757,586
Events in quadrant C2,944,970736,778
Events in quadrant D4,920,914633,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249122
B0172812
C0139282
D0195752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68003855.661765%
B68001902.794118%
C6800200.294118%
D68005458.014706%

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 7630 6801 73 73 0.96% 1.07%
B 7630 6801 68 68 0.89% 1.00%
C 7630 6801 4 4 0.05% 0.06%
D 7630 6801 468 468 6.13% 6.88%

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 10 83 3954667 25767.01 740 723 153.4
A 9 191 44360 284.37 740 723 153.4
A 13 248 39516 252.81 740 723 153.4
B 5 32 691969 4764.07 748 724 145.1
B 0 200 334850 2302.8 748 724 145.1
B 0 198 60932 414.95 748 724 145.1
C 14 254 27861 157.18 737 741 172.5
C 1 3 27633 155.86 737 741 172.5
C 12 250 7734 40.53 737 741 172.5
D 7 38 1500738 8362.26 712 686 179.4
D 4 222 264807 1472.38 712 686 179.4
D 2 249 197922 1099.52 712 686 179.4

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