ASTROSAT CZTI

Data Quality Report

Orbit 20190613_T03_117T01_9000002988_level2

Creation date: 2025-12-01T09:56:58.917679
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/AS1T03_117T01_9000002988cztM0_level2.fits modeM0/AS1T03_117T01_9000002988cztM0_level2_quad_clean.evt
Size (bytes)802,042,560643,481,280
Size764.9 MB 613.7 MB
Events in quadrant A5,003,8383,711,758
Events in quadrant B4,799,5443,695,646
Events in quadrant C4,856,9403,487,367
Events in quadrant D4,299,4903,260,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01702260
B01669930
C01643760
D01807270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015820
B015820
C015820
D015820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7774314151.820100%
B7774312881.656741%
C7774313631.753213%
D7774314111.814954%

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 90113 77737 0 0 0.00% 0.00%
B 90113 77742 0 0 0.00% 0.00%
C 90113 77743 0 0 0.00% 0.00%
D 90113 77733 0 0 0.00% 0.00%

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 29 4732 10.89 1303 1221 322.4
A 7 110 3940 8.43 1303 1221 322.4
A 9 19 3735 7.8 1303 1221 322.4
B 2 9 3834 10.44 1265 1208 251.4
B 2 8 3300 8.32 1265 1208 251.4
B 3 17 3108 7.56 1265 1208 251.4
C 1 81 3691 7.6 1283 1202 327.3
C 1 80 3619 7.38 1283 1202 327.3
C 12 241 3407 6.74 1283 1202 327.3
D 10 189 3076 6.04 1227 1123 323.1
D 3 14 3047 5.95 1227 1123 323.1
D 7 3 2980 5.75 1227 1123 323.1

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