ASTROSAT CZTI

Data Quality Report

Orbit 01238

Creation date: 2024-06-27T14:09:38.261631
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/AS1G04_011T02_9000000226_01238cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01238cztM0_level2_quad_clean.evt
Size (bytes)1,439,853,12092,934,720
Size1.3 GB 88.6 MB
Events in quadrant A8,536,900670,155
Events in quadrant B19,034,477376,246
Events in quadrant C8,369,574643,804
Events in quadrant D7,214,062646,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302162
B0621461
C0297491
D0263051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6831340.497731%
B6831484270.882740%
C683160.087835%
D6831170.248865%

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 7521 6832 330 330 4.39% 4.83%
B 7521 6832 5917 5917 78.67% 86.61%
C 7521 6832 340 340 4.52% 4.98%
D 7521 6832 115 115 1.53% 1.68%

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 15 127 230932 453.65 2084 2102 504.4
A 3 80 225410 442.7 2084 2102 504.4
A 12 243 73655 141.85 2084 2102 504.4
B 2 32 12941141 38542.58 1420 1425 335.7
B 8 4 300908 892.05 1420 1425 335.7
B 5 191 288249 854.34 1420 1425 335.7
C 9 52 413780 766.82 1928 1992 537.0
C 15 241 364837 675.68 1928 1992 537.0
C 3 111 25556 43.88 1928 1992 537.0
D 10 84 98473 166.33 1874 1939 580.4
D 10 85 61876 103.27 1874 1939 580.4
D 12 22 29536 47.55 1874 1939 580.4

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