ASTROSAT CZTI

Data Quality Report

Orbit 58616

Creation date: 2026-07-29T04:13:26.462879
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_004T06_9000006594_58616cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58616cztM0_level2_quad_clean.evt
Size (bytes)579,484,80090,820,800
Size552.6 MB 86.6 MB
Events in quadrant A3,540,212610,569
Events in quadrant B5,404,657569,376
Events in quadrant C7,470,060534,090
Events in quadrant D4,519,325571,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154713
B0206192
C0268022
D0178052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66562573.861178%
B665696914.558293%
C6656107916.210938%
D66561382.073317%

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 7861 6852 210 210 2.67% 3.06%
B 7861 6852 527 527 6.70% 7.69%
C 7861 6852 1003 1003 12.76% 14.64%
D 7861 6852 139 139 1.77% 2.03%

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 10 17 603780 3424.6 710 690 176.1
A 12 114 59843 335.9 710 690 176.1
A 10 251 56264 315.57 710 690 176.1
B 6 255 1805861 12977.09 645 619 139.1
B 8 234 338155 2426.4 645 619 139.1
B 0 171 140640 1006.55 645 619 139.1
C 15 217 2923865 15626.06 671 663 187.1
C 13 3 1361574 7274.79 671 663 187.1
C 15 164 248718 1325.98 671 663 187.1
D 12 128 486040 2433.21 704 673 199.5
D 2 62 430983 2157.2 704 673 199.5
D 2 31 346738 1734.87 704 673 199.5

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