ASTROSAT CZTI

Data Quality Report

Orbit 58481

Creation date: 2026-07-20T01:22:50.685901
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_044T04_9000006592_58481cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58481cztM0_level2_quad_clean.evt
Size (bytes)628,963,20087,056,640
Size599.8 MB 83.0 MB
Events in quadrant A5,453,528605,504
Events in quadrant B10,328,165383,552
Events in quadrant C3,427,974613,480
Events in quadrant D3,565,644577,606

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206132
B0352117
C0148632
D0152902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65324867.440294%
B6531300646.026642%
C6531931.423978%
D6531650.995253%

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 7617 6533 426 426 5.59% 6.52%
B 7615 6531 2455 2455 32.24% 37.59%
C 7616 6532 68 68 0.89% 1.04%
D 7616 6532 41 41 0.54% 0.63%

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 7 64 1348165 7741.72 698 680 174.1
A 12 80 330211 1893.26 698 680 174.1
A 11 3 239484 1372.0 698 680 174.1
B 2 249 6285169 56534.12 511 492 111.2
B 5 172 1646349 14805.39 511 492 111.2
B 0 186 201363 1806.95 511 492 111.2
C 5 10 349718 1808.19 698 693 193.0
C 14 245 60201 308.29 698 693 193.0
C 12 249 59057 302.37 698 693 193.0
D 8 240 243670 1239.7 692 663 196.0
D 0 97 219986 1118.88 692 663 196.0
D 3 12 203744 1036.02 692 663 196.0

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