ASTROSAT CZTI

Data Quality Report

Orbit 20220120_A11_059T05_9000004876_level2

Creation date: 2022-01-22T15:49:27.444453
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/AS1A11_059T05_9000004876cztM0_level2_bc.evt modeM0/AS1A11_059T05_9000004876cztM0_level2_quad_clean.evt
Size (bytes)3,313,252,800671,143,680
Size3.1 GB 640.1 MB
Events in quadrant A12,412,2954,307,153
Events in quadrant B37,813,5153,767,083
Events in quadrant C19,128,8574,279,251
Events in quadrant D27,038,1993,991,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01186110
B02632880
C01389370
D01680540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011840
B011840
C011840
D011840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57991600.103464%
B579912045835.277888%
C5799111011.898570%
D5799117102.948733%

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 78876 57999 1 1 0.00% 0.00%
B 78875 57991 1158 1158 1.47% 2.00%
C 78875 57990 103 103 0.13% 0.18%
D 78875 57991 99 99 0.13% 0.17%

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 455033 675.27 3032 2977 669.4
A 10 83 136463 199.4 3032 2977 669.4
A 13 6 106740 155.0 3032 2977 669.4
B 5 31 16596978 31814.94 2629 2571 521.6
B 5 15 8943518 17141.66 2629 2571 521.6
B 5 172 775712 1482.27 2629 2571 521.6
C 0 10 3240301 4781.81 2983 2957 677.0
C 15 214 2347639 3463.28 2983 2957 677.0
C 14 254 1240646 1828.16 2983 2957 677.0
D 8 195 9477566 13352.66 2965 2868 709.6
D 10 118 2522624 3551.08 2965 2868 709.6
D 7 223 793822 1114.69 2965 2868 709.6

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