ASTROSAT CZTI

Data Quality Report

Orbit 37221

Creation date: 2024-06-27T21:37:05.892387
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_079T01_9000005284_37221cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37221cztM0_level2_quad_clean.evt
Size (bytes)451,068,48072,198,720
Size430.2 MB 68.9 MB
Events in quadrant A2,896,976456,738
Events in quadrant B2,913,369454,641
Events in quadrant C3,449,825445,913
Events in quadrant D4,013,464430,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122123
B0123162
C0136502
D0156592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5698160.280800%
B5698711.246051%
C56981642.878203%
D56982233.913654%

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 7100 5699 11 11 0.15% 0.19%
B 7100 5699 51 51 0.72% 0.89%
C 7100 5699 133 133 1.87% 2.33%
D 7100 5699 162 162 2.28% 2.84%

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 278326 2084.19 654 640 133.2
A 13 248 41897 309.66 654 640 133.2
A 7 16 19780 143.66 654 640 133.2
B 5 172 200375 1571.07 648 630 127.1
B 0 213 101995 797.27 648 630 127.1
B 0 155 34765 268.48 648 630 127.1
C 14 254 395804 2657.96 635 638 148.7
C 15 214 240795 1615.34 635 638 148.7
C 0 10 171549 1149.58 635 638 148.7
D 13 249 330430 2164.36 628 610 152.4
D 1 52 313137 2050.88 628 610 152.4
D 2 249 268484 1757.86 628 610 152.4

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