ASTROSAT CZTI

Data Quality Report

Orbit 39842

Creation date: 2024-06-27T22:09:26.663031
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/AS1A12_022T01_9000005498_39842cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39842cztM0_level2_quad_clean.evt
Size (bytes)445,112,64091,776,960
Size424.5 MB 87.5 MB
Events in quadrant A3,084,023627,224
Events in quadrant B3,637,363617,580
Events in quadrant C6,135,688575,254
Events in quadrant D3,178,197561,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012966180
B015031131
C022555352
D01356395

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01162
B01160
C01160
D01162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5683220.387119%
B56952664.670764%
C56624187.382550%
D5701821.438344%

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 7146 5729 12 12 0.17% 0.21%
B 7146 5735 196 196 2.74% 3.42%
C 7146 5723 426 426 5.96% 7.44%
D 7146 5739 62 62 0.87% 1.08%

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 492347 3924.55 613 601 125.3
A 13 248 170487 1355.83 613 601 125.3
A 15 222 27788 216.98 613 601 125.3
B 5 32 650679 5546.64 602 585 117.2
B 5 172 443181 3776.26 602 585 117.2
B 4 67 69837 590.86 602 585 117.2
C 9 187 2487796 18206.2 582 585 136.6
C 15 208 1061453 7765.48 582 585 136.6
C 15 214 233639 1705.94 582 585 136.6
D 13 171 285173 1918.97 598 578 148.3
D 2 249 165832 1114.27 598 578 148.3
D 12 233 77283 517.2 598 578 148.3

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