ASTROSAT CZTI

Data Quality Report

Orbit 54952

Creation date: 2025-11-24T16:05:31.256771
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/AS1A14_014T01_9000006528_54952cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54952cztM0_level2_quad_clean.evt
Size (bytes)681,819,84078,433,920
Size650.2 MB 74.8 MB
Events in quadrant A4,454,899594,074
Events in quadrant B2,862,419703,908
Events in quadrant C3,270,265615,925
Events in quadrant D14,142,7526,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179082
B0133882
C0145272
D0464682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65135598.582834%
B6513540.829111%
C65131011.550745%
D6513646599.263012%

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 7658 6514 465 465 6.07% 7.14%
B 7658 6514 1 1 0.01% 0.02%
C 7658 6514 72 72 0.94% 1.11%
D 7658 6514 4636 4636 60.54% 71.17%

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 15 32 1445724 8534.32 682 664 169.3
A 0 8 289429 1705.4 682 664 169.3
A 8 6 25135 144.52 682 664 169.3
B 10 247 24319 152.54 709 681 155.0
B 7 252 20606 128.58 709 681 155.0
B 12 111 17893 111.07 709 681 155.0
C 4 5 367822 1902.08 695 688 193.0
C 6 223 59034 302.28 695 688 193.0
C 12 250 32570 165.18 695 688 193.0
D 15 94 12226108 348967.08 118 113 35.0
D 11 129 1185121 33823.73 118 113 35.0
D 3 12 84673 2413.6 118 113 35.0

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