ASTROSAT CZTI

Data Quality Report

Orbit 56813

Creation date: 2026-03-29T21:27:15.221918
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_083T03_9000006562_56813cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56813cztM0_level2_quad_clean.evt
Size (bytes)455,967,36087,863,040
Size434.8 MB 83.8 MB
Events in quadrant A3,413,316593,135
Events in quadrant B5,288,864582,809
Events in quadrant C4,702,129517,982
Events in quadrant D2,995,171536,746

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140471
B0199581
C0185291
D0133951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61591442.338042%
B615973011.852573%
C615866110.734005%
D6159911.477513%

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 7184 6160 22 22 0.31% 0.36%
B 7184 6160 483 483 6.72% 7.84%
C 7183 6159 690 690 9.61% 11.20%
D 7184 6160 27 27 0.38% 0.44%

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 14 589028 3566.36 668 653 165.0
A 10 251 114902 692.51 668 653 165.0
A 7 64 75173 451.69 668 653 165.0
B 4 206 1546471 11409.93 630 607 135.5
B 5 185 718683 5300.07 630 607 135.5
B 10 16 125017 918.26 630 607 135.5
C 15 230 1945597 11261.72 623 615 172.7
C 13 3 83410 479.39 623 615 172.7
C 14 254 77253 443.74 623 615 172.7
D 2 249 220808 1213.14 645 618 181.5
D 5 173 51270 279.07 645 618 181.5
D 2 31 46720 254.0 645 618 181.5

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