ASTROSAT CZTI

Data Quality Report

Orbit 21580

Creation date: 2024-06-27T18:29:48.662398
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_002T02_9000003204_21580cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21580cztM0_level2_quad_clean.evt
Size (bytes)369,823,68090,331,200
Size352.7 MB 86.1 MB
Events in quadrant A2,569,269601,699
Events in quadrant B2,744,796614,043
Events in quadrant C2,594,045587,196
Events in quadrant D2,932,119562,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110040
B0115220
C0110760
D0122160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528690.170261%
B5286300.567537%
C5286350.662126%
D5285741.400189%

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 6621 5287 0 0 0.00% 0.00%
B 6621 5287 9 9 0.14% 0.17%
C 6621 5287 0 0 0.00% 0.00%
D 6620 5286 65 65 0.98% 1.23%

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 15 236 13934 99.1 663 651 134.0
A 13 254 6316 42.27 663 651 134.0
A 0 226 5780 38.27 663 651 134.0
B 6 36 62170 491.17 666 651 125.3
B 0 230 19999 154.47 666 651 125.3
B 3 64 15032 114.82 666 651 125.3
C 14 238 103214 693.59 638 642 147.9
C 13 61 4368 25.2 638 642 147.9
C 3 233 3306 18.01 638 642 147.9
D 1 52 195723 1272.37 634 619 153.3
D 13 153 122216 792.99 634 619 153.3
D 13 104 68261 441.13 634 619 153.3

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