ASTROSAT CZTI

Data Quality Report

Orbit 47781

Creation date: 2024-07-29T15:54:19.280227
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_004T02_9000006348_47781cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47781cztM0_level2_quad_clean.evt
Size (bytes)564,485,760102,778,560
Size538.3 MB 98.0 MB
Events in quadrant A6,806,960704,450
Events in quadrant B4,047,730718,782
Events in quadrant C3,264,409690,251
Events in quadrant D6,271,794544,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255241
B0166671
C0144861
D0231681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65052924.488855%
B65063325.102982%
C65061892.905011%
D6506129519.904703%

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 7520 6506 4 4 0.05% 0.06%
B 7521 6507 104 104 1.38% 1.60%
C 7521 6507 60 60 0.80% 0.92%
D 7521 6507 862 862 11.46% 13.25%

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 3945407 26274.04 725 708 150.1
A 13 248 29282 190.32 725 708 150.1
A 7 3 13818 87.32 725 708 150.1
B 5 32 921549 6526.44 720 697 141.1
B 5 172 196126 1385.08 720 697 141.1
B 7 221 35211 244.61 720 697 141.1
C 12 2 413562 2511.79 708 711 164.4
C 1 3 34785 207.31 708 711 164.4
C 14 220 25453 150.53 708 711 164.4
D 12 2 2945261 18074.17 654 634 162.9
D 2 37 363666 2228.3 654 634 162.9
D 2 165 113834 694.82 654 634 162.9

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