ASTROSAT CZTI

Data Quality Report

Orbit 18311

Creation date: 2024-06-27T17:48:10.758416
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/AS1A06_006T01_9000002720_18311cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18311cztM0_level2_quad_clean.evt
Size (bytes)887,904,000139,947,840
Size846.8 MB 133.5 MB
Events in quadrant A5,580,935888,234
Events in quadrant B5,910,010895,392
Events in quadrant C5,687,288875,010
Events in quadrant D8,989,328838,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226052
B0236332
C0230592
D0339442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107041481.382661%
B107051991.858944%
C107052432.269967%
D107056606.165343%

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 13319 10706 0 0 0.00% 0.00%
B 13320 10707 11 11 0.08% 0.10%
C 13320 10707 1 1 0.01% 0.01%
D 13320 10707 485 485 3.64% 4.53%

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 0 226 13076 40.49 1449 1423 287.8
A 12 194 10678 32.16 1449 1423 287.8
A 3 137 9845 29.27 1449 1423 287.8
B 7 220 158728 581.81 1444 1413 270.4
B 0 197 39780 141.9 1444 1413 270.4
B 12 111 30113 106.14 1444 1413 270.4
C 14 238 218884 682.28 1392 1410 318.7
C 3 233 24302 71.82 1392 1410 318.7
C 0 207 15609 44.55 1392 1410 318.7
D 1 52 1484053 4430.04 1385 1346 334.7
D 7 238 1250654 3732.69 1385 1346 334.7
D 13 168 690676 2059.59 1385 1346 334.7

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