ASTROSAT CZTI

Data Quality Report

Orbit 20210130_A10_115T03_9000004142_level2

Creation date: 2021-02-03T10:08:09.492876
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_115T03_9000004142cztM0_level2_bc.evt modeM0/AS1A10_115T03_9000004142cztM0_level2_quad_clean.evt
Size (bytes)1,169,043,840255,631,680
Size1.1 GB 243.8 MB
Events in quadrant A4,131,3871,623,302
Events in quadrant B4,485,9891,646,488
Events in quadrant C6,569,0981,569,450
Events in quadrant D18,819,5771,490,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419090
B0433330
C0507640
D0891470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204981660.809835%
B204992891.409825%
C204998374.083126%
D20499359117.517928%

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 22043 20497 1 1 0.00% 0.00%
B 22044 20497 0 0 0.00% 0.00%
C 22044 20495 5 5 0.02% 0.02%
D 22044 20497 951 951 4.31% 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 6 16 48221 208.39 1028 1007 226.6
A 13 254 36847 158.19 1028 1007 226.6
A 12 96 30261 129.12 1028 1007 226.6
B 10 245 384957 1879.66 1036 1008 204.3
B 0 183 38993 185.96 1036 1008 204.3
B 5 255 25717 120.97 1036 1008 204.3
C 3 233 2164798 9292.29 977 969 232.9
C 15 208 484708 2077.36 977 969 232.9
C 2 16 61554 260.17 977 969 232.9
D 8 195 11673590 50465.79 961 923 231.3
D 1 52 2944546 12726.51 961 923 231.3
D 7 80 186277 801.36 961 923 231.3

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