ASTROSAT CZTI

Data Quality Report

Orbit 32439

Creation date: 2024-06-27T20:40:12.592003
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_002T06_9000004708_32439cztM0_level2.evt modeM0/AS1C06_002T06_9000004708_32439cztM0_level2_quad_clean.evt
Size (bytes)440,697,60095,552,640
Size420.3 MB 91.1 MB
Events in quadrant A2,152,792673,478
Events in quadrant B5,529,838623,982
Events in quadrant C2,410,647654,375
Events in quadrant D2,957,784635,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090420
B0194700
C098410
D0115380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4358250.573658%
B435883519.160165%
C43581282.937127%
D43582185.002295%

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 4378 4359 0 0 0.00% 0.00%
B 4378 4359 541 541 12.36% 12.41%
C 4378 4359 0 0 0.00% 0.00%
D 4378 4359 154 154 3.52% 3.53%

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 13 254 8994 76.4 556 546 110.6
A 13 6 7470 62.62 556 546 110.6
A 3 137 4839 38.82 556 546 110.6
B 4 80 2017898 21025.06 522 511 96.0
B 6 159 1233392 12848.99 522 511 96.0
B 0 190 99319 1029.77 522 511 96.0
C 14 238 128384 1026.91 541 545 124.5
C 14 67 70802 564.36 541 545 124.5
C 14 254 56789 451.8 541 545 124.5
D 12 233 381860 3014.48 537 522 126.5
D 1 47 300307 2369.8 537 522 126.5
D 8 195 163869 1291.26 537 522 126.5

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