ASTROSAT CZTI

Data Quality Report

Orbit 55560

Creation date: 2026-01-04T13:09:58.695824
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_021T06_9000006538_55560cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55560cztM0_level2_quad_clean.evt
Size (bytes)397,215,36095,987,520
Size378.8 MB 91.5 MB
Events in quadrant A2,891,805622,041
Events in quadrant B2,783,889673,518
Events in quadrant C4,462,060590,226
Events in quadrant D4,045,780555,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137062
B0136532
C0181022
D0169512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6684480.718133%
B6684590.882705%
C66841231.840215%
D66841662.483543%

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 7739 6684 8 8 0.10% 0.12%
B 7739 6684 1 1 0.01% 0.01%
C 7739 6684 90 90 1.16% 1.35%
D 7739 6685 173 173 2.24% 2.59%

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 4 159 64104 374.55 688 670 169.4
A 8 6 46286 269.34 688 670 169.4
A 3 14 40538 235.4 688 670 169.4
B 12 111 18061 120.0 681 657 145.0
B 7 252 16643 110.23 681 657 145.0
B 11 111 16393 108.5 681 657 145.0
C 13 3 1440743 7923.15 661 654 181.8
C 9 38 369171 2027.53 661 654 181.8
C 15 178 23460 125.48 661 654 181.8
D 11 129 464212 2483.38 657 626 186.7
D 8 245 433530 2319.02 657 626 186.7
D 2 172 315287 1685.6 657 626 186.7

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