ASTROSAT CZTI

Data Quality Report

Orbit 20151104_P01_015T03_9000000076_level2

Creation date: 2025-10-20T16:05:27.245951
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/AS1P01_015T03_9000000076cztM0_level2.fits modeM0/AS1P01_015T03_9000000076cztM0_level2_quad_clean.evt
Size (bytes)218,626,560328,752,000
Size208.5 MB 313.5 MB
Events in quadrant A1,221,2622,058,255
Events in quadrant B1,231,2602,098,677
Events in quadrant C1,223,7942,047,899
Events in quadrant D1,024,4661,832,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01191360
B01176590
C01086100
D01254420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05700
C05760
D05760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279312020.723211%
B27922500.179070%
C27931330.118148%
D278642320.832616%

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 45151 28020 0 0 0.00% 0.00%
B 45151 28020 0 0 0.00% 0.00%
C 45151 28028 0 0 0.00% 0.00%
D 45151 27965 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 7 110 1217 12.05 317 297 76.4
A 0 29 1167 11.39 317 297 76.4
A 0 30 934 8.34 317 297 76.4
B 2 9 1089 13.45 325 311 57.8
B 14 254 841 9.17 325 311 57.8
B 2 8 787 8.23 325 311 57.8
C 12 241 902 7.4 323 300 81.3
C 2 191 849 6.75 323 300 81.3
C 1 81 830 6.52 323 300 81.3
D 6 44 824 7.73 292 268 72.0
D 6 231 806 7.48 292 268 72.0
D 11 82 761 6.85 292 268 72.0

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