ASTROSAT CZTI

Data Quality Report

Orbit 52510

Creation date: 2025-06-13T08:05:42.077753
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/AS1A13_037T01_9000006476_52510cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52510cztM0_level2_quad_clean.evt
Size (bytes)738,541,44088,433,280
Size704.3 MB 84.3 MB
Events in quadrant A2,969,710659,041
Events in quadrant B4,794,334695,813
Events in quadrant C10,188,132409,425
Events in quadrant D8,883,869460,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138142
B0187812
C0347893
D0309562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494801.231906%
B64942473.803511%
C6493251738.764824%
D6493153123.579239%

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 7634 6495 19 19 0.25% 0.29%
B 7634 6495 148 148 1.94% 2.28%
C 7632 6493 2413 2413 31.62% 37.16%
D 7633 6493 1579 1579 20.69% 24.32%

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 13 248 80867 450.12 710 692 178.1
A 3 14 31899 175.2 710 692 178.1
A 11 3 29046 159.19 710 692 178.1
B 10 254 924934 6153.75 703 678 150.2
B 10 44 318043 2113.03 703 678 150.2
B 4 81 255050 1693.62 703 678 150.2
C 15 224 6929874 44383.23 567 562 156.1
C 13 3 364912 2333.71 567 562 156.1
C 4 5 166330 1061.77 567 562 156.1
D 15 93 3092786 17400.74 619 592 177.7
D 6 42 1169344 6576.93 619 592 177.7
D 8 176 610392 3431.53 619 592 177.7

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