ASTROSAT CZTI

Data Quality Report

Orbit 56309

Creation date: 2026-02-24T01:15:47.426507
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_049T01_9000006552_56309cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56309cztM0_level2_quad_clean.evt
Size (bytes)889,629,12080,965,440
Size848.4 MB 77.2 MB
Events in quadrant A15,828,783183,409
Events in quadrant B5,482,545685,316
Events in quadrant C7,048,388507,775
Events in quadrant D4,025,343583,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519142
B0215770
C0259320
D0171670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7052534175.737379%
B70533264.622147%
C7053150721.366794%
D70531572.226003%

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 7052 7052 5019 5019 71.17% 71.17%
B 7053 7053 195 195 2.76% 2.76%
C 7053 7053 1057 1057 14.99% 14.99%
D 7053 7053 172 172 2.44% 2.44%

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 11571240 106645.77 429 420 108.5
A 8 249 764725 7044.44 429 420 108.5
A 8 25 629833 5801.16 429 420 108.5
B 5 172 1629614 10432.85 726 701 156.1
B 5 185 481848 3081.65 726 701 156.1
B 0 231 162942 1039.12 726 701 156.1
C 12 94 3091490 18054.7 622 616 171.2
C 5 250 431558 2517.26 622 616 171.2
C 15 209 368929 2151.42 622 616 171.2
D 2 249 252544 1253.5 710 676 200.9
D 2 62 184298 913.85 710 676 200.9
D 8 129 164602 815.83 710 676 200.9

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