ASTROSAT CZTI

Data Quality Report

Orbit 20210726_A10_119T01_9000004590_level2

Creation date: 2025-12-27T23:02:50.171118
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/AS1A10_119T01_9000004590cztM0_level2.fits modeM0/AS1A10_119T01_9000004590cztM0_level2_quad_clean.evt
Size (bytes)445,248,000321,569,280
Size424.6 MB 306.7 MB
Events in quadrant A2,547,5521,618,482
Events in quadrant B2,674,8181,759,622
Events in quadrant C2,742,6521,701,629
Events in quadrant D2,390,2941,532,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0690
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01501330
B01420100
C01028930
D01229120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09280
B09260
C09260
D09250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45478819318.015304%
B4539813192.905414%
C4555010962.406147%
D4559817483.833501%

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 65038 45476 0 0 0.00% 0.00%
B 65041 45743 0 0 0.00% 0.00%
C 65041 45914 0 0 0.00% 0.00%
D 65041 45966 0 0 0.00% 0.00%

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 0 29 2082 8.93 663 626 163.1
A 7 110 2081 8.92 663 626 163.1
A 9 19 1875 7.66 663 626 163.1
B 2 9 2125 10.18 708 676 142.4
B 5 255 1772 7.7 708 676 142.4
B 3 80 1768 7.67 708 676 142.4
C 12 241 2011 7.15 727 682 185.9
C 3 126 1832 6.19 727 682 185.9
C 3 187 1831 6.18 727 682 185.9
D 3 14 1743 6.17 682 622 181.8
D 7 3 1685 5.85 682 622 181.8
D 10 189 1625 5.52 682 622 181.8

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