ASTROSAT CZTI

Data Quality Report

Orbit 21558

Creation date: 2024-06-27T18:29:29.920397
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/AS1A06_009T02_9000003194_21558cztM0_level2.evt modeM0/AS1A06_009T02_9000003194_21558cztM0_level2_quad_clean.evt
Size (bytes)614,090,880103,631,040
Size585.6 MB 98.8 MB
Events in quadrant A3,415,543686,343
Events in quadrant B3,731,251689,639
Events in quadrant C3,399,342674,508
Events in quadrant D7,559,894581,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149171
B0156432
C0148901
D0274521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7266280.385356%
B7266470.646848%
C7266520.715662%
D726693212.826865%

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 7586 7267 2 2 0.03% 0.03%
B 7586 7267 2 2 0.03% 0.03%
C 7586 7267 0 0 0.00% 0.00%
D 7586 7267 777 777 10.24% 10.69%

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 4 2 33596 184.86 876 860 177.1
A 13 254 11058 57.59 876 860 177.1
A 0 226 7641 38.29 876 860 177.1
B 0 189 157392 946.77 869 848 165.3
B 0 230 71372 426.53 869 848 165.3
B 0 219 46791 277.86 869 848 165.3
C 14 238 131432 670.99 833 838 194.6
C 8 128 9571 44.87 833 838 194.6
C 13 61 5897 25.99 833 838 194.6
D 1 52 3453173 17911.95 792 768 192.7
D 2 136 419666 2173.35 792 768 192.7
D 9 68 162818 840.76 792 768 192.7

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