ASTROSAT CZTI

Data Quality Report

Orbit 24514

Creation date: 2024-06-27T19:06:46.434550
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/AS1T03_183T01_9000003606_24514cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24514cztM0_level2_quad_clean.evt
Size (bytes)1,029,029,760190,794,240
Size981.4 MB 182.0 MB
Events in quadrant A5,589,1521,312,561
Events in quadrant B10,260,3691,180,328
Events in quadrant C5,658,7721,272,764
Events in quadrant D8,863,5141,201,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240362
B0382402
C0244442
D0340452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117131801.536754%
B11714217418.558989%
C117142632.245177%
D117148277.059928%

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 12768 11715 0 0 0.00% 0.00%
B 12768 11714 1247 1247 9.77% 10.65%
C 12769 11716 14 14 0.11% 0.12%
D 12769 11715 543 543 4.25% 4.64%

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 14 111 223179 791.69 1389 1360 280.2
A 13 254 18838 62.38 1389 1360 280.2
A 3 137 12856 41.03 1389 1360 280.2
B 3 64 5317650 22178.2 1253 1217 239.7
B 12 111 29175 116.63 1253 1217 239.7
B 11 111 26354 104.86 1253 1217 239.7
C 14 238 212371 682.82 1335 1342 309.1
C 2 16 163828 525.75 1335 1342 309.1
C 10 9 71903 228.31 1335 1342 309.1
D 1 52 1574680 4942.43 1310 1267 318.3
D 12 218 1162253 3646.9 1310 1267 318.3
D 8 195 823151 2581.71 1310 1267 318.3

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