ASTROSAT CZTI

Data Quality Report

Orbit 36703

Creation date: 2024-06-27T21:30:30.835086
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/AS1C07_001T09_9000005236_36703cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36703cztM0_level2_quad_clean.evt
Size (bytes)893,027,520190,454,400
Size851.7 MB 181.6 MB
Events in quadrant A5,290,7511,291,274
Events in quadrant B6,262,9301,273,621
Events in quadrant C6,520,6441,266,733
Events in quadrant D8,244,7081,192,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229314
B0258163
C0262103
D0318183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10742680.633029%
B107422582.401787%
C107423433.193074%
D107428117.549805%

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 13517 10744 35 35 0.26% 0.33%
B 13517 10744 165 165 1.22% 1.54%
C 13517 10744 265 265 1.96% 2.47%
D 13517 10744 674 674 4.99% 6.27%

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 411020 1740.25 1179 1156 235.5
A 13 248 144819 609.98 1179 1156 235.5
A 9 143 93708 392.97 1179 1156 235.5
B 5 255 715890 3242.36 1163 1129 220.4
B 0 221 272222 1229.76 1163 1129 220.4
B 0 229 153251 690.07 1163 1129 220.4
C 14 254 890392 3395.67 1138 1145 261.9
C 0 10 640105 2439.92 1138 1145 261.9
C 15 214 475343 1810.77 1138 1145 261.9
D 12 233 1677919 6154.46 1122 1092 272.5
D 13 171 486113 1780.17 1122 1092 272.5
D 2 249 302370 1105.78 1122 1092 272.5

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