ASTROSAT CZTI

Data Quality Report

Orbit 46776

Creation date: 2024-06-27T23:27:29.480882
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/AS1A13_053T01_9000006266_46776cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46776cztM0_level2_quad_clean.evt
Size (bytes)491,711,040101,160,000
Size468.9 MB 96.5 MB
Events in quadrant A6,855,178656,239
Events in quadrant B3,574,242698,198
Events in quadrant C2,966,130669,312
Events in quadrant D4,313,855596,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246181
B0149331
C0135321
D0173471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63444406.935687%
B6344821.292560%
C6345951.497242%
D63453545.579196%

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 7394 6344 264 264 3.57% 4.16%
B 7394 6344 19 19 0.26% 0.30%
C 7395 6345 58 58 0.78% 0.91%
D 7395 6345 321 321 4.34% 5.06%

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 3187046 22460.77 682 666 141.9
A 9 191 512790 3609.96 682 666 141.9
A 13 248 498780 3511.2 682 666 141.9
B 3 112 641200 4695.7 689 668 136.4
B 0 198 46464 335.73 689 668 136.4
B 5 172 40610 292.81 689 668 136.4
C 1 241 251256 1580.47 674 678 158.5
C 3 233 46108 286.54 674 678 158.5
C 14 254 33496 206.99 674 678 158.5
D 1 52 605243 3580.79 669 646 168.8
D 13 249 502649 2973.16 669 646 168.8
D 2 249 417127 2466.65 669 646 168.8

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