ASTROSAT CZTI

Data Quality Report

Orbit 56030

Creation date: 2026-02-05T05:13:12.164143
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_066T02_9000006546_56030cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56030cztM0_level2_quad_clean.evt
Size (bytes)793,897,92089,838,720
Size757.1 MB 85.7 MB
Events in quadrant A10,114,754466,543
Events in quadrant B4,074,949698,631
Events in quadrant C3,842,284624,007
Events in quadrant D10,805,989435,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349872
B0172182
C0167572
D0371125

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7100238533.591549%
B71002283.211268%
C71011512.126461%
D7100214230.169014%

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 8780 7102 1954 1954 22.26% 27.51%
B 8780 7102 101 101 1.15% 1.42%
C 8781 7103 79 79 0.90% 1.11%
D 8780 7102 1921 1921 21.88% 27.05%

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 5625433 35874.31 632 616 156.8
A 12 115 1186975 7566.43 632 616 156.8
A 7 64 459289 2925.35 632 616 156.8
B 5 185 674712 4231.43 746 720 159.3
B 10 247 152567 953.32 746 720 159.3
B 7 252 76157 473.61 746 720 159.3
C 13 3 741541 3650.53 736 730 202.9
C 14 254 73678 359.47 736 730 202.9
C 12 252 56257 273.62 736 730 202.9
D 11 129 4555546 24544.94 648 619 185.6
D 2 62 2892765 15584.78 648 619 185.6
D 2 172 214184 1150.83 648 619 185.6

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