ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_006T05_9000004506_level2

Creation date: 2025-12-27T09:24:59.327107
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/AS1C06_006T05_9000004506cztM0_level2.fits modeM0/AS1C06_006T05_9000004506cztM0_level2_quad_clean.evt
Size (bytes)83,269,44048,412,800
Size79.4 MB 46.2 MB
Events in quadrant A545,430252,045
Events in quadrant B495,954243,292
Events in quadrant C506,306234,765
Events in quadrant D452,434213,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166830
B0235710
C0170710
D0246450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75001491.986667%
B75002683.573333%
C75002473.293333%
D75002873.826667%

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 9795 7500 0 0 0.00% 0.00%
B 9795 7500 0 0 0.00% 0.00%
C 9795 7500 0 0 0.00% 0.00%
D 9795 7499 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 29 478 9.56 142 135 35.9
A 7 110 434 8.33 142 135 35.9
A 9 19 422 8.0 142 135 35.9
B 2 9 361 8.43 131 126 27.9
B 5 225 337 7.57 131 126 27.9
B 14 254 334 7.46 131 126 27.9
C 9 233 358 6.55 134 126 35.4
C 9 209 354 6.44 134 126 35.4
C 3 126 343 6.13 134 126 35.4
D 15 46 356 6.7 129 118 35.5
D 6 231 333 6.05 129 118 35.5
D 12 6 332 6.03 129 118 35.5

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