ASTROSAT CZTI

Data Quality Report

Orbit 55096

Creation date: 2025-12-04T08:04:03.920882
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_025T01_9000006530_55096cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55096cztM0_level2_quad_clean.evt
Size (bytes)446,869,440105,039,360
Size426.2 MB 100.2 MB
Events in quadrant A3,015,481698,958
Events in quadrant B3,239,882751,932
Events in quadrant C4,751,617654,849
Events in quadrant D5,013,661607,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140652
B0145132
C0189412
D0196182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6705330.492170%
B6705701.043997%
C67052283.400447%
D67052874.280388%

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 7850 6706 6 6 0.08% 0.09%
B 7850 6706 14 14 0.18% 0.21%
C 7850 6706 188 188 2.39% 2.80%
D 7850 6706 296 296 3.77% 4.41%

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 8 47237 251.88 742 725 184.7
A 4 3 43614 232.26 742 725 184.7
A 3 61 39700 211.07 742 725 184.7
B 4 21 262297 1651.29 738 713 158.4
B 10 247 19737 120.09 738 713 158.4
B 12 111 19201 116.71 738 713 158.4
C 3 242 814131 4084.05 716 709 199.2
C 13 3 417541 2092.84 716 709 199.2
C 6 223 380028 1904.49 716 709 199.2
D 15 94 671262 3300.66 703 670 203.2
D 2 249 500566 2460.49 703 670 203.2
D 6 239 331641 1629.04 703 670 203.2

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