ASTROSAT CZTI

Data Quality Report

Orbit 55868

Creation date: 2026-01-25T07:18:01.115882
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_030T02_9000006544_55868cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55868cztM0_level2_quad_clean.evt
Size (bytes)500,209,92082,817,280
Size477.0 MB 79.0 MB
Events in quadrant A6,343,572432,153
Events in quadrant B2,828,021621,621
Events in quadrant C4,780,607506,760
Events in quadrant D4,072,018505,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231638
B0133402
C0186982
D0165942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633493914.824755%
B6334330.520998%
C63345839.204294%
D63341011.594569%

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 7798 6518 951 951 12.20% 14.59%
B 7798 6579 8 8 0.10% 0.12%
C 7798 6578 447 447 5.73% 6.80%
D 7798 6579 94 94 1.21% 1.43%

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 12 115 3405870 22278.29 618 603 152.9
A 8 249 168639 1099.34 618 603 152.9
A 7 64 121994 794.18 618 603 152.9
B 5 236 78155 556.65 655 633 139.3
B 5 172 74714 531.94 655 633 139.3
B 0 199 28689 201.46 655 633 139.3
C 15 199 934730 5455.26 618 611 171.2
C 13 3 758068 4423.56 618 611 171.2
C 12 254 370291 2158.93 618 611 171.2
D 2 62 510641 2826.16 635 607 180.5
D 11 129 477030 2639.91 635 607 180.5
D 4 160 223056 1232.61 635 607 180.5

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