ASTROSAT CZTI

Data Quality Report

Orbit 35603

Creation date: 2022-04-29T18:33:28.251976
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_065T04_9000005098_35603cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35603cztM0_level2_quad_clean.evt
Size (bytes)1,365,356,160230,394,240
Size1.3 GB 219.7 MB
Events in quadrant A7,708,4201,515,618
Events in quadrant B10,768,5521,480,529
Events in quadrant C9,478,8091,495,014
Events in quadrant D12,303,2401,371,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330495
B0423934
C0377754
D0473754

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16170260.160792%
B161708415.200989%
C161702391.478046%
D1617011627.186147%

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 21662 16174 1 1 0.00% 0.01%
B 21662 16174 605 605 2.79% 3.74%
C 21662 16174 152 152 0.70% 0.94%
D 21662 16174 1007 1007 4.65% 6.23%

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 344562 912.09 1870 1831 375.8
A 13 6 39591 100.49 1870 1831 375.8
A 15 169 33317 83.79 1870 1831 375.8
B 5 172 3376371 9649.53 1817 1766 349.7
B 15 85 72087 201.08 1817 1766 349.7
B 12 111 44378 121.85 1817 1766 349.7
C 0 10 951155 2248.76 1810 1820 422.2
C 0 207 740089 1748.79 1810 1820 422.2
C 15 214 661425 1562.45 1810 1820 422.2
D 7 80 2303591 5247.62 1773 1724 438.7
D 12 227 988442 2249.44 1773 1724 438.7
D 10 118 534074 1213.61 1773 1724 438.7

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