ASTROSAT CZTI

Data Quality Report

Orbit 57544

Creation date: 2026-05-18T01:27:20.917812
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_113T09_9000006574_57544cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57544cztM0_level2_quad_clean.evt
Size (bytes)528,382,080105,272,640
Size503.9 MB 100.4 MB
Events in quadrant A3,518,477701,807
Events in quadrant B4,268,580745,164
Events in quadrant C5,676,938620,287
Events in quadrant D5,512,423598,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160800
B0177820
C0222470
D0216280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7500340.453333%
B75011451.933076%
C75016769.012132%
D75015256.999067%

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 7500 7500 24 24 0.32% 0.32%
B 7501 7501 23 23 0.31% 0.31%
C 7501 7501 587 587 7.83% 7.83%
D 7501 7501 536 536 7.15% 7.15%

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 3 14 239890 1206.8 804 783 198.1
A 4 249 72988 364.43 804 783 198.1
A 10 251 28078 137.76 804 783 198.1
B 4 206 520229 3015.91 793 763 172.2
B 5 185 189630 1096.52 793 763 172.2
B 4 201 97913 564.03 793 763 172.2
C 15 224 1299886 6345.45 749 740 204.7
C 6 223 1272685 6212.59 749 740 204.7
C 12 252 52146 251.08 749 740 204.7
D 15 142 1463216 6923.84 754 721 211.2
D 2 31 402911 1904.07 754 721 211.2
D 15 94 110947 521.84 754 721 211.2

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