ASTROSAT CZTI

Data Quality Report

Orbit 20210617_A10_058T10_9000004472_level2

Creation date: 2021-06-21T13:10:13.696228
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/AS1A10_058T10_9000004472cztM0_level2_bc.evt modeM0/AS1A10_058T10_9000004472cztM0_level2_quad_clean.evt
Size (bytes)4,318,839,3601,312,122,240
Size4.0 GB 1.2 GB
Events in quadrant A20,746,5658,516,657
Events in quadrant B48,241,0648,472,153
Events in quadrant C22,912,0518,199,884
Events in quadrant D32,425,4308,029,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01996130
B02940350
C02130380
D02382920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01530
C01530
D01520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019320
B019320
C019380
D019360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9520210311.082960%
B9515123412.460300%
C9520135883.768868%
D9522533873.556839%

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 124255 95335 1 1 0.00% 0.00%
B 124254 95316 80 80 0.06% 0.08%
C 124254 95332 56 56 0.05% 0.06%
D 124254 95344 248 248 0.20% 0.26%

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 13 254 164531 141.85 5311 5227 1123.1
A 11 47 145886 125.25 5311 5227 1123.1
A 3 243 65491 53.66 5311 5227 1123.1
B 6 159 25751190 25888.94 5334 5223 994.5
B 5 172 564221 562.1 5334 5223 994.5
B 0 190 535150 532.87 5334 5223 994.5
C 0 10 1352210 1131.45 5096 5082 1190.6
C 3 233 1196320 1000.51 5096 5082 1190.6
C 14 254 317029 262.0 5096 5082 1190.6
D 8 195 5004789 4239.65 5200 5040 1179.3
D 13 174 2231888 1888.31 5200 5040 1179.3
D 15 47 2050693 1734.66 5200 5040 1179.3

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