ASTROSAT CZTI

Data Quality Report

Orbit 58711

Creation date: 2026-08-04T14:27:44.760711
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_58711cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58711cztM0_level2_quad_clean.evt
Size (bytes)636,963,84090,172,800
Size607.5 MB 86.0 MB
Events in quadrant A3,471,133641,928
Events in quadrant B3,759,633678,688
Events in quadrant C4,476,845577,930
Events in quadrant D11,341,603356,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01503822
B01583134
C01817136
D038534174

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191321.935768%
B68162513.682512%
C68185608.213552%
D6799299344.021180%

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 7745 6829 23 23 0.30% 0.34%
B 7745 6829 90 90 1.16% 1.32%
C 7745 6827 467 467 6.03% 6.84%
D 7743 6819 2621 2621 33.85% 38.44%

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 12 114 240062 1283.13 752 730 186.5
A 3 14 233355 1247.17 752 730 186.5
A 3 254 43819 231.01 752 730 186.5
B 6 255 273408 1695.48 737 709 160.8
B 8 234 160452 993.19 737 709 160.8
B 10 16 153028 947.03 737 709 160.8
C 12 249 1204740 6315.77 703 694 190.6
C 6 223 149411 780.09 703 694 190.6
C 13 3 96969 505.01 703 694 190.6
D 11 129 7019714 42583.33 581 556 164.8
D 2 249 1172980 7112.78 581 556 164.8
D 8 240 367404 2225.57 581 556 164.8

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