ASTROSAT CZTI

Data Quality Report

Orbit 36211

Creation date: 2022-06-09T20:50:19.543543
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/AS1A11_080T02_9000005176_36211cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36211cztM0_level2_quad_clean.evt
Size (bytes)1,238,497,920144,702,720
Size1.2 GB 138.0 MB
Events in quadrant A5,465,540975,284
Events in quadrant B6,305,532969,881
Events in quadrant C13,550,633841,949
Events in quadrant D11,476,055862,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230093
B0253782
C0471902
D0412872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10562160.151486%
B105622732.584738%
C10562298828.290097%
D10562170016.095436%

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 13398 10564 1 1 0.01% 0.01%
B 13398 10564 170 170 1.27% 1.61%
C 13398 10564 2640 2640 19.70% 24.99%
D 13398 10564 1523 1523 11.37% 14.42%

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 15 223 416957 1714.47 1199 1173 242.5
A 10 83 305078 1253.14 1199 1173 242.5
A 9 143 93241 379.64 1199 1173 242.5
B 5 172 1022893 4544.43 1182 1149 224.8
B 0 190 214502 948.93 1182 1149 224.8
B 4 232 115403 508.17 1182 1149 224.8
C 4 254 8298254 34644.03 1033 1038 239.5
C 15 214 404658 1685.26 1033 1038 239.5
C 0 207 397256 1654.36 1033 1038 239.5
D 12 235 4650986 17065.9 1117 1085 272.5
D 12 6 907967 3328.4 1117 1085 272.5
D 12 227 613250 2246.75 1117 1085 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