ASTROSAT CZTI

Data Quality Report

Orbit 20200118_C05_012T03_9000003442_level2

Creation date: 2020-01-20T15:55:52.844862
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/AS1C05_012T03_9000003442cztM0_level2_bc.evt modeM0/AS1C05_012T03_9000003442cztM0_level2_quad_clean.evt
Size (bytes)2,943,619,2001,504,995,840
Size2.7 GB 1.4 GB
Events in quadrant A16,048,68310,308,385
Events in quadrant B16,700,62210,411,264
Events in quadrant C17,013,0129,991,123
Events in quadrant D34,084,4219,544,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015820
B015820
C015820
D015820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01599540
B01618070
C01640130
D02212060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A778335460.701502%
B778337931.018848%
C7783410671.370866%
D7783447016.039777%

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 91069 77830 2 2 0.00% 0.00%
B 91069 77828 43 43 0.05% 0.06%
C 91069 77834 34 34 0.04% 0.04%
D 91069 77825 1067 1067 1.17% 1.37%

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 113304 121.97 4134 4070 895.6
A 6 16 73684 77.73 4134 4070 895.6
A 0 226 26773 25.35 4134 4070 895.6
B 5 172 235180 295.07 4144 4048 783.3
B 0 229 200188 250.4 4144 4048 783.3
B 14 207 162133 201.81 4144 4048 783.3
C 10 9 902489 950.73 3987 3970 945.1
C 7 247 364533 381.52 3987 3970 945.1
C 0 239 177943 184.08 3987 3970 945.1
D 1 52 11706266 12370.51 3993 3863 946.0
D 7 238 4815936 5086.8 3993 3863 946.0
D 12 233 739989 778.15 3993 3863 946.0

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