ASTROSAT CZTI

Data Quality Report

Orbit 34850

Creation date: 2022-03-09T21:37:29.353844
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_005T01_9000004992_34850cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34850cztM0_level2_quad_clean.evt
Size (bytes)1,511,948,160148,550,400
Size1.4 GB 141.7 MB
Events in quadrant A22,356,415536,640
Events in quadrant B8,991,2741,074,330
Events in quadrant C6,368,5631,102,240
Events in quadrant D7,366,0251,053,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0735413
B0336492
C0255222
D0294032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10519833379.218557%
B10519129012.263523%
C105192101.996387%
D105192552.424185%

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 13324 10518 7787 7787 58.44% 74.03%
B 13324 10520 1107 1107 8.31% 10.52%
C 13325 10521 170 170 1.28% 1.62%
D 13325 10521 222 222 1.67% 2.11%

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 15 169 19791631 154263.78 636 623 128.3
A 10 83 38730 297.03 636 623 128.3
A 13 6 18625 140.32 636 623 128.3
B 5 14 1030667 4752.76 1148 1118 216.6
B 5 31 1023546 4719.88 1148 1118 216.6
B 5 15 1021763 4711.65 1148 1118 216.6
C 0 207 503938 1894.24 1151 1159 265.4
C 15 214 474867 1784.72 1151 1159 265.4
C 0 10 299288 1123.21 1151 1159 265.4
D 8 195 1201392 4267.62 1154 1121 281.3
D 13 249 291394 1032.08 1154 1121 281.3
D 12 227 283719 1004.79 1154 1121 281.3

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