ASTROSAT CZTI

Data Quality Report

Orbit 23264

Creation date: 2024-06-27T18:52:02.956226
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/AS1A08_004T03_9000003438_23264cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23264cztM0_level2_quad_clean.evt
Size (bytes)837,092,160147,723,840
Size798.3 MB 140.9 MB
Events in quadrant A5,638,348928,918
Events in quadrant B5,830,540943,707
Events in quadrant C5,864,833897,913
Events in quadrant D7,201,452869,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246152
B0248552
C0249112
D0293482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12053350.290384%
B12054520.431392%
C120541060.879376%
D120542221.841712%

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 13703 12055 0 0 0.00% 0.00%
B 13704 12056 5 5 0.04% 0.04%
C 13704 12056 4 4 0.03% 0.03%
D 13704 12056 156 156 1.14% 1.29%

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 19552 61.96 1462 1432 292.5
A 3 137 12934 39.33 1462 1432 292.5
A 0 226 12514 37.89 1462 1432 292.5
B 12 111 33949 116.59 1465 1428 278.9
B 11 111 30119 102.86 1465 1428 278.9
B 0 230 26599 90.24 1465 1428 278.9
C 14 238 221389 669.87 1409 1421 328.4
C 0 207 94231 282.63 1409 1421 328.4
C 2 16 43333 127.63 1409 1421 328.4
D 7 238 778562 2250.7 1423 1382 345.3
D 1 52 624496 1804.53 1423 1382 345.3
D 1 239 185869 534.27 1423 1382 345.3

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