ASTROSAT CZTI

Data Quality Report

Orbit 01782

Creation date: 2024-06-27T14:12:37.556088
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/AS1G02_020T01_9000000296_01782cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01782cztM0_level2_quad_clean.evt
Size (bytes)1,107,201,60097,470,720
Size1.0 GB 93.0 MB
Events in quadrant A8,568,248631,972
Events in quadrant B8,283,679638,677
Events in quadrant C7,827,536616,849
Events in quadrant D8,414,836603,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03014813
B0293452
C02799611
D0296802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6607620.938399%
B6609430.650628%
C6607330.499470%
D66091672.526857%

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 7579 6609 352 352 4.64% 5.33%
B 7579 6610 312 312 4.12% 4.72%
C 7579 6609 215 215 2.84% 3.25%
D 7579 6609 445 445 5.87% 6.73%

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 0 231 446988 870.69 2121 2131 510.9
A 10 2 11700 18.73 2121 2131 510.9
A 13 9 5173 5.95 2121 2131 510.9
B 15 85 25977 46.04 2168 2174 517.0
B 5 94 22564 39.44 2168 2174 517.0
B 0 234 18751 32.07 2168 2174 517.0
C 8 208 190288 345.64 1952 2015 544.7
C 15 246 10735 16.01 1952 2015 544.7
C 14 48 7024 9.2 1952 2015 544.7
D 10 85 488399 802.14 1933 1996 606.4
D 7 85 366313 600.81 1933 1996 606.4
D 13 138 112017 181.44 1933 1996 606.4

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