ASTROSAT CZTI

Data Quality Report

Orbit 51922

Creation date: 2025-05-04T17:16:01.601209
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_011T05_9000006466_51922cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51922cztM0_level2_quad_clean.evt
Size (bytes)1,095,865,92074,298,240
Size1.0 GB 70.9 MB
Events in quadrant A13,326,942314,168
Events in quadrant B5,345,557666,848
Events in quadrant C10,258,683432,591
Events in quadrant D11,090,876345,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444680
B0208050
C0353380
D0377950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7043385154.678404%
B70435427.695584%
C7043251635.723413%
D7043314044.583274%

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 7043 7043 3617 3617 51.36% 51.36%
B 7043 7043 349 349 4.96% 4.96%
C 7043 7043 2206 2206 31.32% 31.32%
D 7042 7042 2815 2815 39.97% 39.97%

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 8 248 8375224 59739.79 564 551 140.2
A 3 95 605898 4318.18 564 551 140.2
A 12 3 559005 3983.67 564 551 140.2
B 5 185 649821 4308.82 710 686 150.7
B 12 32 557245 3694.32 710 686 150.7
B 10 44 303067 2007.14 710 686 150.7
C 15 224 5601565 34352.37 595 590 163.0
C 15 158 606544 3716.49 595 590 163.0
C 13 3 305856 1872.28 595 590 163.0
D 12 17 5186882 35833.43 506 484 144.7
D 6 42 1256105 8675.23 506 484 144.7
D 7 60 384393 2652.47 506 484 144.7

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