ASTROSAT CZTI

Data Quality Report

Orbit 20220202_C07_001T05_9000004902_level2

Creation date: 2022-02-04T11:25:58.368424
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_001T05_9000004902cztM0_level2_bc.evt modeM0/AS1C07_001T05_9000004902cztM0_level2_quad_clean.evt
Size (bytes)4,444,934,4001,407,542,400
Size4.1 GB 1.3 GB
Events in quadrant A16,992,8439,462,816
Events in quadrant B24,047,4019,505,591
Events in quadrant C25,554,3899,436,804
Events in quadrant D62,463,9858,617,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02890
B02890
C02890
D02890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660810
B01924640
C01892930
D03099350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81881970.118465%
B8188117922.188542%
C8188114691.794067%
D81881838510.240471%

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 109985 81892 5 5 0.00% 0.01%
B 109985 81880 193 193 0.18% 0.24%
C 109985 81881 325 325 0.30% 0.40%
D 109985 81879 3775 3775 3.43% 4.61%

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 10 83 292074 308.34 4228 4162 933.7
A 13 6 165679 172.98 4228 4162 933.7
A 9 143 165058 172.31 4228 4162 933.7
B 5 172 4309538 5165.96 4242 4157 833.4
B 4 251 611718 729.0 4242 4157 833.4
B 4 171 502947 598.49 4242 4157 833.4
C 14 254 4665173 4872.45 4160 4134 956.6
C 15 214 3226387 3368.41 4160 4134 956.6
C 0 10 663896 689.69 4160 4134 956.6
D 12 235 22490854 22758.02 4039 3910 988.1
D 8 195 11967199 12107.51 4039 3910 988.1
D 12 227 5103150 5160.71 4039 3910 988.1

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