ASTROSAT CZTI

Data Quality Report

Orbit 58952

Creation date: 2026-08-21T09:19:30.476900
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_004T07_9000006598_58952cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58952cztM0_level2_quad_clean.evt
Size (bytes)726,010,56088,908,480
Size692.4 MB 84.8 MB
Events in quadrant A12,995,752291,884
Events in quadrant B5,124,443674,708
Events in quadrant C4,103,591643,474
Events in quadrant D4,107,036594,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434501
B0199401
C0170411
D0169181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6997430061.454909%
B699775610.804631%
C69972463.515792%
D69983494.987139%

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 7181 6996 3740 3740 52.08% 53.46%
B 7181 6996 431 431 6.00% 6.16%
C 7181 6996 109 109 1.52% 1.56%
D 7182 6997 153 153 2.13% 2.19%

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 14 238 10135619 76857.2 530 515 131.9
A 10 251 408410 3093.18 530 515 131.9
A 15 233 331535 2510.21 530 515 131.9
B 2 249 767066 4602.47 766 736 166.5
B 4 171 400742 2402.38 766 736 166.5
B 6 255 371758 2228.31 766 736 166.5
C 3 233 306634 1443.29 774 764 211.9
C 12 252 303761 1429.74 774 764 211.9
C 6 223 205057 963.99 774 764 211.9
D 7 222 198339 901.96 779 745 219.1
D 13 138 197403 897.69 779 745 219.1
D 11 129 158066 718.13 779 745 219.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct