ASTROSAT CZTI

Data Quality Report

Orbit 53487

Creation date: 2025-08-18T02:11:23.523868
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_002T07_9000006498_53487cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53487cztM0_level2_quad_clean.evt
Size (bytes)1,038,265,92074,635,200
Size990.2 MB 71.2 MB
Events in quadrant A10,183,551506,354
Events in quadrant B7,869,257573,393
Events in quadrant C15,938,135103,779
Events in quadrant D3,911,148597,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350842
B0279942
C0520287
D0164882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6870219231.906841%
B6871183226.662786%
C6870594286.491994%
D68702123.085881%

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 8905 6870 1808 1808 20.30% 26.32%
B 8906 6871 1500 1500 16.84% 21.83%
C 8904 6869 5597 5597 62.86% 81.48%
D 8905 6870 82 82 0.92% 1.19%

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 63 5589103 32880.22 698 682 170.0
A 15 174 1208052 7103.72 698 682 170.0
A 3 62 424577 2494.04 698 682 170.0
B 2 249 4232314 29011.81 681 658 145.9
B 5 185 479704 3284.29 681 658 145.9
B 10 28 125852 858.32 681 658 145.9
C 7 64 9106951 91947.69 364 361 99.0
C 15 224 1591754 16068.02 364 361 99.0
C 9 38 1397102 14102.66 364 361 99.0
D 2 249 296908 1373.81 758 722 215.6
D 3 12 178587 825.0 758 722 215.6
D 12 35 151116 697.58 758 722 215.6

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