ASTROSAT CZTI

Data Quality Report

Orbit 37347

Creation date: 2024-06-27T21:38:49.029617
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/AS1C07_014T01_9000005314_37347cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37347cztM0_level2_quad_clean.evt
Size (bytes)763,689,60078,312,960
Size728.3 MB 74.7 MB
Events in quadrant A3,025,660555,725
Events in quadrant B3,315,772572,791
Events in quadrant C10,770,143378,818
Events in quadrant D5,663,530496,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121453
B0131082
C0355362
D0203342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5232390.745413%
B52321753.344801%
C5232340565.080275%
D523294318.023700%

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 7355 5233 22 22 0.30% 0.42%
B 7355 5233 124 124 1.69% 2.37%
C 7355 5233 3220 3220 43.78% 61.53%
D 7355 5233 853 853 11.60% 16.30%

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 272106 2088.74 647 637 130.0
A 9 143 127195 973.76 647 637 130.0
A 15 237 56206 427.56 647 637 130.0
B 5 255 332813 2706.95 643 629 122.7
B 5 172 301501 2451.79 643 629 122.7
B 0 190 44542 357.85 643 629 122.7
C 1 23 8733515 88822.39 422 426 98.3
C 14 254 159303 1615.9 422 426 98.3
C 15 214 154437 1566.41 422 426 98.3
D 12 227 1976378 13998.08 577 563 141.1
D 12 235 1150844 8149.41 577 563 141.1
D 12 233 126522 892.38 577 563 141.1

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