ASTROSAT CZTI

Data Quality Report

Orbit 40719

Creation date: 2024-06-27T22:19:33.650728
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/AS1A12_042T01_9000005560_40719cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40719cztM0_level2_quad_clean.evt
Size (bytes)175,078,08050,639,040
Size167.0 MB 48.3 MB
Events in quadrant A1,544,638342,286
Events in quadrant B1,495,125356,662
Events in quadrant C1,752,151339,576
Events in quadrant D1,460,448287,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062942
B062711
C069851
D063311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290890.309491%
B290890.309491%
C2908351.203576%
D29082578.837689%

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 4791 2909 2 2 0.04% 0.07%
B 4791 2909 1 1 0.02% 0.03%
C 4791 2909 34 34 0.71% 1.17%
D 4791 2909 7 7 0.15% 0.24%

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 10 83 252596 3683.57 330 323 68.5
A 12 189 11766 167.09 330 323 68.5
A 13 254 4610 62.6 330 323 68.5
B 0 190 126934 1959.51 329 319 64.6
B 4 170 37283 572.06 329 319 64.6
B 0 230 13627 205.96 329 319 64.6
C 9 187 261305 3499.8 320 322 74.6
C 15 214 125455 1678.04 320 322 74.6
C 12 249 86764 1159.19 320 322 74.6
D 12 191 94652 1265.6 304 295 74.6
D 2 250 69028 921.91 304 295 74.6
D 2 153 45866 611.24 304 295 74.6

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